Power Controller Single-phase Models EUN Series AC Power Controller with Phase-control System Allows Precise Temperature Control Models with Base-up and Soft-start Functions Available EH Series Phase Control System Makes It Possible to Detect Disconnection of Heaters EC Series Optimum Device for Controlling Input Power for Pure Metal Heater, and Incorporates Overcurrent Detecting and Single Heater Burnout Detecting Functions OMRON s unique design and carefully-selected materials made it possible to produce a compact and lightweight Power Controller. Replaceable, easy-to-install Power Device Cartridge assures ease of maintenance. Detecting component failures and operating errors. On applying for UL, CSA. Ordering Information EUN Series Phase Applicable load Level indicator Base-up function (see note ) Soft-start time Single Resistive load Yes Yes Approx. 0. to Heater 0 sec Carry current Rated voltage Model 0 A 00/0 VAC -0EUN 0 A 00/0 VAC -0EUN 0 A (see note ) -0EUN. The base-up output with a 0-mA temperature controller output (i.e. the temperature controller is OFF) differs from that with a -ma temperature controller output. Refer the Characteristics data on page.. When ordering, make sure that the rated voltage is 00/0 VAC because the 00/0-VAC exists as well.
EH Series Phase Applicable load Level indicator Single heater burnout detection Multiple heater burnout detection Carry current Rated voltage Model (see note ) Single Resistive load Yes Yes No 0 A 00/0 0 VAC -0EH-CT0 Heater 0 A 00/0 VAC -0EH-CT0 (see note ) -0EH-CT0-0EH-CT0 0 A -0EH-CT0-0EH-CT0 Yes (see note ) Yes 0 A -0EHN-CT0-0EHN-CT0 0 A -0EHN-CT0-0EHN-CT0 0 A -0EHN-CT0-0EHN-CT0. EH- and EHN-series models are provided with a CT incorporating 0- or 00-cm-long lead wires and Power Device Cartridge. When ordering, specify the length of the lead wires by adding a code to the model number as shown below. - 0EH-CT0: CT with 0-cm-long lead wires - 0EH-CT0: CT with 00-cm-long lead wires. Adjusts the multiple heater burnout detection sensitivity of EHN-series models. Enables single heater burnout detection in control of a maximum of five heaters.. When ordering, Rated voltage should be made sure if it is for 00/0 VAC. Otherwise 00/0 VAC is existing. EC Series Phase Applicable load Level indicator Constant-current function Single heater burnout detection Carry current Rated voltage Model (see note ) Single Resistive load Yes Yes Yes 0 A 00/0 0 VAC -0EC-CT0 Heater 0 A 00/0 VAC -0EC-CT0 (see note ) -0EC-CT0-0EC-CT0 0 A -0EC-CT0-0EC-CT0. EC-series models are provided with a CT Unit with lead wires (0- or 00- cm in length). When ordering, specify the length of the lead wires by adding a code to the model number as shown below. - 0EC-CT0: CT with 0-cm-long lead wires - 0EC-CT0: CT with 00-cm-long lead wires. When ordering, Rated voltage should be made sure if it is for 00/0 VAC. Otherwise 00/0 VAC is existing. Accessories (Order Separately) CT Unit Name Length of lead wires Solderless terminals Applicable models Model CT Unit 0. m Yes - EH GX-CT0 m Power Device Cartridge GX-CT0 0. m - EHN GX-CT0HN m GX-CT0HN 0. m - EC GX-CT0C m GX-CT0C Name Carry current Applicable models Model Power Device Cartridge 0 A -0E GX-A0 0 A -0E GX-A0 0 A -0E GX-A0 The GX-A is a dedicated Power Device Cartridge for the. Refer to Replacement Parts on page.
Specifications Ratings Control Item - 0EUN/ 0EUN/ 0EUN Rated voltage 00/0, 00/0 VAC Frequency 0/0 Hz (see note ) Input signal for control External main setting Current input Voltage ON/OFF input External duty setting Relay output for alarm - 0EH/ 0EH/ 0EH - 0EHN/ 0EHN/ 0EHN kω (type B, W min.) kω (type B, W min.) kω (type B, W min.) to 0 ma (at to V) (Input impedance: 0Ω) (see note ) to VDC (Input impedance: approx. 0 kω) kω (type B) --- SPDT: A at 0 VAC/0 VDC - 0EC/ 0EC/ 0EC. 0/0 Hz (no selector required) (EUN Series) Terminals and of EHN/EC-series models must be open when the supply frequency is 0 Hz. These terminals must be short-circuited when the supply frequency is 0 Hz.. Use the GX-VK -kω Variable Resistor for external main setting on EUN, EC, and EHN (GX-VK -kω for EN-series models).. Input to 0 ma or to VDC linear input to the to 0 ma current input terminal. Output Model -0E -0E N -0E -0E N -0E -0E N Applicable load Load voltage range Load current Inrush current Number of phase 00/0, 00/0 VAC to 0 A (see note) 0 A (0 Hz, cycle) Single (0/0 Hz) to 0 A (see note) 0 A (0 Hz, cycle) to 0 A (see note) 0 A (0 Hz, cycle) The - EHN (model with multiple heater burnout detecting function) and - EC (constant-current model) require 0% min. of the rated current to detect a short mode failure. EC-series models detect an open mode failure if the load current has dropped to 0% of the rated value. A short mode failure will be detected if the current has risen to 0% of the rated value. Characteristics EU/EH Series Item Operating voltage range Operating frequency range Output voltage adjustable range Internal duty setting range External duty setting range Start-up time (see note ) ±0% ± Hz 0% to % -0EUN/ 0EUN/0EUN -0EH/0EH/0EH 0% to 00% 0% to 00% (see note ) 0% to 00% 0% to 00% 0% to 00% (see note ) 0% to 00% Approx. 0. to 0 s (see note ) Approx. 0. to s (see note ) -0EHN/ 0EHN/0EHN Approx. 0. to 0 s (see note ) Base-up range 0% to 0% --- Multiple heater burnout detection --- 0% max. (see note )
Item -0EUN/ 0EUN/0EUN Min. phase detection --- Approx. / π -0EH/0EH/0EH Min. phase setting --- --- Approx. / π Min. load current for ON error detecting Abnormality detection time Voltage drop with output ON Leakage current Insulation resistance Dielectric strength Vibration resistance -0EHN/ 0EHN/0EHN --- A 0% max. of rated current (see note ) --- 0. s max. s max.. V max. (RMS) 0 ma max. at 00/0 VAC, 0 ma max. at 00/0 VAC 00 MΩ min. (at 00 VDC),000 VAC, 0/0 Hz for min. Malfunction: 0 to Hz, 0G Shock resistance Malfunction: 00 m/s Ambient temperature Operating: C to C (with no icing or condensation) Storage: 0 C to C (with no icing or condensation) Ambient humidity Operating: % to % Weight -0EUN: approx.. kg -0EUN: approx.. kg -0EUN: approx.. kg -0EH: approx.. kg -0EH: approx.. kg -0EH: approx.. kg -0EHN: approx.. kg -0EHN: approx.. kg -0EHN: approx.. kg. Duty setting does not complete to the OFF state (i.e. 0% remains).. The start-up time is factory-set to s on the EH Series, approx. 0. s on the EHN and EC Series.. This is the initial start-up time with a 00% duty setting.. Detection is effective when the set current is reduced by 0% or more.. The minimum set value in the -0EHN is A. If a lower value is required, increase the number of wiring turns around the CT. EC Series Item -0EC -0EC -0EC Operating voltage range ±0% Operating frequency range ± Hz Output voltage adjustable 0% to % range Internal duty setting range 0% to 00% External duty setting range 0% to 00% Start-up time Approx. 0. to 0 s Min. load current for ON error 0% max. of rated current detecting Current limit range 0% to 00% Excess current detection Peak current of 0 A within cycle Peak current of 0 A within cycle Peak current of 0 A within cycle Constant current ±% max. with 0-time increment of load value ±% max. with ±0% change of voltage Abnormality detection time s max. Voltage drop with output ON. V max. (RMS) Leakage current 0 ma max. at 00/0 VAC, 0 ma max. at 00/0 VAC Insulation resistance 00 MΩ min. (at 00 VDC) Dielectric strength,000 VAC, 0/0 Hz for min. Vibration resistance Malfunction: 0 to Hz, 0G Shock resistance Malfunction: 00 m/s Ambient temperature Operating: C to C (with no icing or condensation) Storage: 0 C to C (with no icing or condensation) Ambient humidity Operating: % to % Weight -0EC: approx.. kg -0EC: approx.. kg -0EC: approx.. kg
Engineering Data The following data is for an ambient temperature of C. Output Characteristics -EUN/EH/EHN Models -EC Duty Setting -EUN/EH/EHN Models 00% Output voltage (%) Output voltage (%) Output voltage (%) 0% 0% 0% Input current (ma) Input current (ma) Input current (ma) Base-up Characteristics - 0EUN Models Output voltage (%) Input current (ma) Load Current vs. Ambient Temperature -0E Models -0E Models -0E Models Load current (A) Load current (A) Load current (A) Ambient temperature ( C) Ambient temperature ( C) Ambient temperature ( C)
Withstand Inrush Current -0E Models -0E Models -0E Models Inrush current (A.Peak) Inrush current (A.Peak) Inrush current (A.Peak) Energizing time (ms) Energizing time (ms) Energizing time (ms) The above are possible on condition that the is in non-repetitive operation. If the is in repetitive operation, reduce the applied current to half.
Nomenclature Single-function Model (EUN-series Model) - 0EUN POWER indicator BASE-UP adjuster Level indicator Multiple Heater Burnout Detection (EHN-series Model) - 0EHN-CT RUN/SET switch for setting condition for multiple heater burnout detection. Level indicator POWER indicator SHORT indicator (for short-mode failure detection) RESET switch DUTY adjuster (for internal slope setting) TIME adjuster (for Extended soft-start time) Power Device Cartridge CT Unit OPEN indicator (for multiple heater burnout detection) ALARM adjuster (for multiple heater burnout detection) DUTY adjuster (for internal slope setting) TIME adjuster (for extended soft-start time) Power Device Cartridge Single Heater Burnout Detection (EH-series Model) - 0EH-CT POWER indicator SHORT indicator (for short-mode failure detection) CT Unit OPEN indicator (for single heater burnout detection) DUTY adjuster (for internal slope setting) TIME adjuster (for soft-start time) Level indicator Reset switch Power Device Cartridge Constant-current Model (EC-series Model) - 0EC-CT POWER indicator SHORT indicator (for short-mode failure detection) OPEN indicator (for single heater burnout detection) CT Unit CURRENT limit adjuster (for limiting current) DUTY adjuster (for internal slope setting) TIME adjuster (for extended soft-start time) Level indicator RESET switch Power Device Cartridge
Operation Error Detecting Function Wiring Single-phase Models All - 0EH/EHN/EC-series models incorporate terminals and for the CT Unit, and for the external reset switch, and and for relay output as well as power/input terminals through 0.. When EH/EHN/EC-series models detect a short-mode failure, the SHORT indicator is lit and the SPDT relay output is ON. With continuous load current. CT Unit GX-CT (see note ) CT Unit Load External reset switch (see note ) - 0EH Relay output (SPDT) With load current shut off. (see note ) Load Load Load. Connect either the black or white lead wire of the CT Unit to terminal and the other lead wire to terminal. The will malfunction if you do not connect the CT Unit to the.. The rated current and voltage of models when reset are as follows: EH-series models: ma at VDC EHN- and EC-series models: ma at VDC. For more than one heater. Output Single-phase Models The following illustrations show the condition of the LED indicators when the detects heater burnout, a short-mode failure (ON failure of components), or overcurrent (EC-series constant-current models only). The indicator and relay output signals are reset with the internal or external reset switch provided that the error condition has been remedied.. When EH/EHN/EC-series models detect single or multiple heater burnout, the OPEN indicator is lit and the SPDT relay output is ON. When the detects heater burnout, the Level indicator will be OFF regardless of the input condition. The red OPEN indicator will be lit. EHN-series models, however, will continue operating with level indication. When the detects a short-mode failure, all LEDs of the Level indicator and red SHORT indicator are lit. When you use a breaker to disconnect the load with the relay output, all LEDs of the Level indicator will be OFF regardless of the input to the.. When EC-series models detect an overcurrent, the Level indicator will flash and the SPDT relay output is ON. The input signal will be shut off. When resetting, leave power supply terminals 0 to or ON.
Wiring Main Circuit Single-phase Models The following illustrations show connection examples: Load 00/0 VAC 00/0 VAC 0 Load Load Use a single power supply for the and the load. Setting Circuit Analog Control Single-phase Models. A Temperature Controller with - to 0-mA output is used to control the. E X Temperature Controller + to 0 ma Load + Temperature Controller (00 Ω*) to 0 ma (0 Ω*) (0 Ω*) *Impedance 0 Load Two models can be connected in series to OMRON s single Temperature Controller (with an internal impedance of 00 Ω) with a current output.. A Temperature Controller with an output of to 0 ma is used with the to change the duty. Load E X Temperature Controller + to 0 ma Internal DUTY adjuster DUTY 0 Load GX-VK External Variable Resistor ( kω) for duty setting You can change the duty with the external or internal ramp adjuster.
ON/OFF Control Single-phase Models. A Temperature Controller is used to change the duty of GPZ. Load E S Temperature Controller + // VDC ON/OFF Internal DUTY adjuster DUTY 0 Load GX-VK External DUTY Adjuster ( kω) You can change the duty with the external or internal variable resistor.. A Temperature Controller (with a voltage output) is used to control several s. Temperature Controller specifications No. of E X: 0 ma at V 0 sets E S: 0 ma at V 0 sets 0 ma at V 0 sets 0 ma at V 0 sets Connection Example Temperature controller +. A Temperature Controller (with a relay output) is used to vary the duty of. Temperature controller Load Internal DUTY adjuster GX-VK External DUTY Adjuster ( kω) DUTY 0 Load 0
Manual Control Single-phase Models GX-VK or GX-VK External DUTY Adjuster GX-VK External DUTY Adjuster ( kω) for duty setting Load Internal DUTY adjuster DUTY 0 Load Delicate duty adjustment is possible with the external or internal resistor. Use a right DUTY adjuster (- or -kω type) according to the model as follows: GK-VK ( kω) for EH-series models GX-VK ( kω) for EUN-, EHN-, and EC-series models Two-position Control Single-phase Models GX-VK or GX-VK External DUTY Adjuster H (High) Load L (Low) RY 0 Load. A temperature controller with relay output or a single relay can be used with the in two-position (high-and low-position) control, in which case the relay contact current is 0 ma at VDC with the External DUTY Adjuster set to 0 Ω.. Use a right DUTY adjuster (- or -kω type) according to the model as follows: GX-VK ( kω) for EH-series models GX-VK ( kω) for EUN-, EHN-, and EC-series models. Setting of Base-up Output (- 0EUN Series) The base-up output can be adjusted with the base-up adjuster knob. It is also possible to control the base-up output for the full scale of to 0-mA input current by adjusting the duty adjuster. Refer to Engineering Data on page for the base-up characteristics. - 0EHN Series (Multiple Heater Burnout Detection Model) Setting. Use the GX-CT HN CT Unit and make sure that the is wired correctly.. The initially set is shown in the following illustration. Make sure that the RUN/SET switch has been set to SET. Make sure that the DUTY adjuster has been turned clockwise to the maximum.. Adjust the sensitivity. Turn the ALARM adjuster and set to the position where the OPEN indicator is lit. Stop turning the ALARM adjuster as soon as the indicator is lit to complete the setting.
. Set the RUN/SET switch to RUN. When all settings have been finished, the OPEN indicator is OFF.. The can control any part of the phase as long as the controlled phase is approximately /π or more in width.. Be sure to prepare terminals and corresponding to the supply frequency of 0 Hz or 0 Hz. Otherwise, a setting error will result in a malfunction regardless of the RUN/SET switch setting. When the error has occurred, turn the ALARM adjuster counterclockwise to the minimum setting, reset the, and readjust.
Replacement Parts GX-A Power Device Cartridge The temperature indicator will be lit in red if the power element is damaged. If the power element is damaged due to overcurrent or other reasons, the power element and its peripheral parts can be replaced. The power element and its peripheral parts can be replaced without disconnecting the wires of the. Improve the heat radiation of the before replacing the Cartridge. The temperature indicator will not be lit in red if the has overcurrent due to load short-circuiting or other reasons over a short time. Appearance GX-A0 GX-A0 GX-A0 Replacement of GX-A0 Power Device Cartridge Use the special tool (provided) to extract the Cartridge for replacement with a new one. Extraction Follow the procedures below to dismount the Power Device Cartridge from the.. Switch off the power.. Remove the terminal cover.. Hook the tool on the indented portions of the Power Device Cartridge as shown in the illustration below and pull up the Power Device Cartridge vertically. Special tool Indented portions Terminal cover Mounting The procedures for mounting the Power Device Cartridge are as follows:. Apply silicone grease (provided with the GX-A) to the entire surface of the heat radiator.. Make sure there is no dust or pieces of wire on the heat radiators of the GX-A or the.. Insert the Cartridge into the opening of the so that the letters on the Cartridge and those on the are in the same direction and sides A and B are even. B A. Attach the terminal cover.. Switch on the power and check the to be sure it works properly. GX-A0/0 The GX-A0 and GX-A0 are secured with screws. Extraction The procedures for dismounting the Power Device Cartridge are as follows:. Switch off the.. Remove the terminal cover.. Be sure to turn off the and loosen the screws located in the upper center and lower center. These screws are connected to terminals and. Loosen Loosen
. Loosen the screws on both corners.. Insert the Cartridge into the opening of the so that the letters on the Cartridge and those on the are in the same direction and sides A and B are even. Loosen A Loosen B. Hold the indented part of both corners to dismount the Cartridge. Mounting. Apply silicone grease (provided with the GX-A) to the entire surface of the heat radiator.. Make sure there is no dust or pieces of wire on the heat radiators of the GX-A or the.. Tighten the screws on both corners with a tightening torque of 0. to 0. N m.. Tighten the center screws of the with a tightening torque of 0. to 0. N m.. Attach the terminal cover.. Switch on the power and check the to be sure it works properly. External Variable Resistor The GX-VK and GX-VK are provided with a set consisting of adjuster, knob, and nameplate. Resistive value Model (see note ) kω GX-VK (see note ) kω GX-VK. The GX-VK is equivalent to the conventional GX-VR.. Resistive Value The resistance is read on the back of the variable resistor. External DUTY Adjuster.± MP0. ± dia. ±0. R max..±0. dia. Knob 0 0. dia. Filled with ±0. white resin min. 0± max. 0±.±0. 0 max.. Mounting Holes Nameplate. dia. hole %. ±0.. dia. hole GX-VR 00
Dimensions All units are in millimeters unless otherwise indicated. Single-phase Models -0E Series Mounting Holes Four,. dia. or M holes 0±0. Two,. dia. holes. 0±0. Two, M screws.. 0±0. 0 max. 0 0. Two, R. holes 0 0 0 max. 0±0. 0 max. -0E Series Mounting Holes Four,. dia. or M holes 0±0. ±0. Two,. dia. holes Two, M screws 0±0. 0 max. 0. 0. Two, R. holes 0 0 0 max. ±0. max.
-0E Series Mounting Holes Four.-dia. or M holes 0±0. Two,. dia. holes 0±0. Two, M screws. 0±0. 0 max. 0 0. Two, R. holes 0 0 0 max. 0±0. 00 max. GX-CT0 Series GX-CT0 Series 0 max. 0 0 dia. hole ( dia., see note ) Mounting Holes Two.-dia. or M holes. 0±0. 0 (see note ). Color of the hole EH Series: Black EHN Series: White EC Series: Light gray The size of the hole of CT Units for EC- and EHN-series models is dia.. The GX-CT0 incorporates 0-cm solderless terminals and the GX-CT0 incorporates 00-cm solderless terminals.
Installation Terminal Arrangement Single-phase Models -0EUN -0EUN -0EUN External main setting kωb, W for kωb W EUN-series models MAN SET Voltage ON/OFF input VOLTAGE IN Current input to 0 ma DC CURRENT ( to VDC) to VDC (Voltage) INPUT External duty setting kωb MAN DUTY SET SOURCE -0EH -0EH -0EH CT UNIT GX-CT W RESET ALARM Internal contact configuration B External main setting kωb W MAN SET Voltage ON/OFF input VOLTAGE IN Current input to 0 ma DC CURRENT ( to VDC) to VDC (VOLTAGE) INPUT External duty setting kωb MAN DUTY SET SOURCE 0 00/0 VAC 0/0 Hz 00/0 VAC 0/0 Hz 0 00/0 VAC 0/0 Hz 00/0 VAC 0/0 Hz -0EHN/0EC -0EHN/0EC -0EHN/0EC CT UNIT GX-CT RESET ALARM Internal contact configuration OPEN 0 Hz SHORT 0 Hz (see note) W B 0 External main setting kωb W MAN SET Voltage ON/OFF input VOLTAGE IN Current input to 0 ma DC CURRENT ( to VDC) to VDC (VOLTAGE) INPUT External duty setting kωb MAN DUTY SET 00/0 VAC 0/0 Hz SOURCE 00/0 VAC 0/0 Hz Open the terminals for 0 Hz or short-circuit the terminals for 0 Hz. When the product is shipped, the terminals are short-circuited using a short-circuiting bar to set to 0 Hz. When using at 0 Hz, remove the short-circuiting bar.
Precautions Correct Use Load Only resistive loads can be connected to the. Contact your OMRON representatives if it is necessary to connect inductive or transformer loads. Mounting The three-phase, 0-A weighs approximately kg. Pay utmost attention when mounting the so that the will not fall thus resulting in injury. Vertical Mounting Flat Mounting In the case of flat mounting, the 0% derating of the load current is required. Close Mounting Example (Single-phase Models) 0 mm 0 mm Wiring Make sure that the lead wires are thick enough according to the current. Be sure to turn off power to the when wiring. The has current leakage although the is turned off if the power supply is connected to the, which may give an electric shock. Do not wire power lines or high-tension lines along with the lines of the in the same conduit, otherwise the may be damaged or malfunction due to induction. Be sure to wire the lines of the separated from power lines or high-tension lines or laid in an exclusive, shielded conduit. Tightening Torque Apply the following tightening torque. Output terminal: 0-A model:. N m 0-A model:. N m 0-A model:. N m Terminal block: Single-phase model: 0. N m Be sure to protect the terminals with the protective cover after wiring. Wiring for Error Detection If a contactor is employed and operated with the relay output signal of the for error detection, make sure that the is closer to the power supply than the contactor. Instruments Instrument Thermal type Digital type displaying root-mean-square values Moving-iron type Rectifier type Multimeter Digital multimeter Remarks Available Not available a abe (not precise enough) The instruments are used for displaying room-mean-square voltage and current values of the AC circuitry. Operation Monitoring The level indicator just indicates the phase of the load and it is not highly precise. Ramp Setting There is a decrease in ramp if the internal DUTY adjuster is turned counterclockwise. 0 mm DUTY DUTY 0 mm 0 mm Make sure that there is a space of at least 0 mm vertically and at least 0 mm horizontally between adjacent single-phase models. 00% 0% If the External DUTY Adjuster is used, set the Internal DUTY Adjuster to 00%. CT Unit The CT Unit varies with the -series model. Use the following CT Units in combination with the models. - 0EH Series: GX-CT - 0EHN Series: GX-CT HN - 0EC Series: GX-CT C
If any of the following models is used and the actual load current is 0% of the maximum rated load current or lower, increase the number of turns of the wire around the CT Unit. -0EHN Series (multi-heater burnout detective models) -0EC Series (constant current) For example, make two turns if the actual load current is 0% of the maximum rated load current and four turns if the actual load current is % of the maximum rated load current. If the is a constant current model, do not increase the number of turns of the wire around the CT Unit excessively, otherwise the overcurrent detective function may operate by mistake. External DUTY Adjuster Use the External DUTY Adjuster with a resistance of kω or that with a resistance of kω according to the -series model in use. Refer to the following combinations. - EH Series: GX-VK ( kω) - 0EUN Series - 0EC Series Base-up Function If the model in use has the model number suffix EUN, the base-up function is available. The base-up output of the with a temperature controller output of 0 ma (i.e., the temperature controller is turned off) and that of the with a temperature controller output of ma are different from each other. Power Device Cartridge Do not apply power to the with the Power Device Cartridge dismounted. Heater Burnout Detection EH and EHN Models The heater burnout detective function is not available for detecting the phase less than the following. Also check the current limit adjuster if the is a constant DC model. CUR LIM The does not operate or is in abnormal operation. Make sure that all input terminals are connected properly with no mistakes in polarity. Make sure that the internal DUTY adjuster is not set to the farthest clockwise position. Make sure that the frequency used by the (i.e., 0 or 0 Hz) is set properly. (This applies to the EC, and EHN models.) The malfunctions if the external adjusters are turned. Make sure that the numbers on the external adjusters coincide with the corresponding terminal numbers on the. Make sure that the -kω and -kω DUTY adjusters are connected correctly. External main setting (Positive) External duty setting (Positive) Phase not detectable,,,,, and are terminal numbers of the. -0EH Series: π/ or less -0EHN Series: Approx. π/ or less Power Supply Single-phase Models Only Do not apply 00 V to the 00-V terminals, otherwise the thermal fuse of the built-in transformer will be blown and the will not operate. Others It is not possible to use three single-phase models for three-phase load control. If three-phase power supply is used for single-phase models operating in parallel, make sure that the two phases supplied to all the single-phase models are the same. Troubleshooting Check the following if the does not operate or has difficulty in temperature control. The load does not turn on with 00% input. Check the default internal ramp setting. DUTY Make sure that the adjuster is set to the farthest clockwise position. Temperature control with a Voltage-output Temperature Controller is not smooth. Make sure that the controlled soft-start up/down time has been adjusted properly. If not, turn the TIME adjuster counterclockwise to the minimum setting to reduce the controlled start-up/down time. Input signal Controlled soft-start up Input signal Controlled soft-start up Reduce this period. TIME TIME The Level indicator is not OFF with a 0% input signal (- 0EUN Series). Make sure that the BASE UP adjuster has been turned counterclockwise to the minimum setting. BASE UP Make sure that the adjuster is turned counterclockwise to the minimum setting.
The OPEN indicator of a multiple heater burnout detection model is lit at the initial stage (- 0EHN Series). Make sure that the initial settings are OK. If not, readjust the. Make sure that terminals and are open if the supply frequency is 0 Hz. These terminals must be short-circuited if the supply frequency is 0 Hz. Make sure that the load current is large enough. The Level indicator LEDs of a constant-current model are all lit and no power control operation is possible. Make sure that the load current is large enough. Countermeasure : Adjust the CUR LIM adjuster so that the LED on the farthest right of the Level indicator is OFF. When the supply current is % of the rated current, the wires must be coiled three to four times on the CT Unit. No reset will be performed even if the RESET button is pressed. Check whether the RESET button is pressed while there is nothing input into to power supply terminals and 0 or and 0 of the. Be sure to press the RESET button with power supplied to the. The following wiring will be required if the breaker or contactor connected between the power supply and the is operated by the relay output of the. Adjust so that this LED is OFF. Magnet contactor Load CUR LIM adjuster for limiting current Countermeasure : When the supply current is less than 0%, increase the number of turns. When the supply current is 0% of the rated current, the wires must be coiled twice on the CT Unit. ALL DIMENSIONS SHOWN ARE IN MILLIMETERS. To convert millimeters into inches, multiply by 0.0. To convert grams into ounces, multiply by 0.0. Cat. No. K0-E-A 0