PHOENIX CONTACT - 01/2008

Transcription

1 Exi Solenoid Driver, With Intrinsically Safe Output, LoopPowered, TwoChannel INTERFACE Data Sheet 0289_00_en PHOENIX CONTACT 0/2008 Description The PIEXME2SD/24/65C is a twochannel solenoid driver. It connects a signaling device installed in the safe area to a device located in the Ex area. As the input and output are electrically isolated, the control switch can be located in both cables of the supply circuit. Solenoid valves, alarm modules or other intrinsically safe devices can be connected, and basic electrical equipment, such as LEDs, can be operated. The safety data is designed so that loads can be operated in an IIC group gas. The PIEXME2SD/24/65C solenoid driver does not require a separate power supply, instead it is looped in the circuit.. Properties Twochannel Looppowered Output [EEx ia] IIC 2way electrical isolation The device is an associated item of equipment and must not be installed in potentially explosive areas. When installing and operating the device, the applicable safety directives (including national safety directives), accident prevention regulations, as well as general technical regulations, must be observed. Observe the safety regulations and installation notes on page 4. Make sure you always use the latest documentation. It can be downloaded at A conversion table is available on the Internet at This data sheet is valid for all products listed on the following page:

2 Table of Contents Description... 2 Ordering Data Technical Data Safety Regulations and Installation Notes Structure Basic Circuit Diagram Installation Comparison of Safety Data Calculating a Valve Circuit Ordering Data Solenoid Driver Description Type Order No. Pcs./Pck. Exi solenoid driver, with intrinsically safe output, looppowered, twochannel PIEXME2SD/24/65C Accessories Description Type Order No. Pcs./Pck. Loop wire jumper, 50pos., can be separated, maximum jumpering distance of 60 mm, for jumpering identical inputs and outputs, 0.5 mm², insulation: Black Blue Gray DB BK DB BU DB GY For additional accessories, please refer to the "INTERFACE" catalog from Phoenix Contact. 3 Technical Data Input Input signal Input current 8 V DC V DC (from the control circuit) x I V (output current) Output Output characteristic curve (see Figure on page 3) = 24 V (guaranteed voltage) R i = 370 Ω (internal resistance) Output current (coil current) I V I V = /(R i + R SV ) (see page 7) Response time 20 ms 0289_00_en PHOENIX CONTACT 2

3 Output Characteristic Curve 24 V Output voltage ma Output current I V Figure Output characteristic curve for PIEXME2SD/24/65C General Data Supply voltage range (No separate supply voltage required) Supply voltage type External Power consumption W, approximately; with power adaptation of the output circuit Electrical isolation (input/output) 375 V (peak value according to EN 50020) Test voltage (input/output).5 kv AC, 50 Hz, minute Housing material Polyamide PA, not reinforced Inflammability class according to UL 94 V0 Degree of protection IP20 Color Green Dimensions (width x length x height) 22.5 mm x 99 mm x 4.5 mm Design Terminal block housing for mounting on DIN rails Connection method Plugin screw terminal blocks NAMUR recommendation NE 2 Climatic Data Ambient temperature (operation) Ambient temperature (storage/transport) Permissible humidity (operation) Indicators Status indicator EC Conformance EMC directive 89/336/EEC Ex directive (ATEX) 20 C +60 C 25 C +80 C < 75% (annual average) < 95% (30 days/year, no condensation) Yellow LED (switching state of the input) Yes Yes Safety Data According to ATEX for Intrinsically Safe Circuits Maximum voltage U o Maximum current I o Maximum power P o Gas group Maximum external inductance L o Maximum external capacitance C o Maximum effective voltage U m 27.3 V 96 ma 650 mw 250 V AC IIB 3.5 mh μf IIC 2 mh μf Approvals ATEX X II () GD [EEx ia] IIC, TÜV 00 ATEX 526 UL/CUL U C.D. No. 00T423 (see "UL/CUL Approval" on page 5) 0289_00_en PHOENIX CONTACT 3

4 4 Safety Regulations and Installation Notes 4. Installation and Operation Follow the installation instructions. NOTE: Installation, operation, and maintenance may only be carried out by qualified specialist personnel. When installing and operating the device, the applicable safety directives (including national safety directives), accident prevention regulations, as well as general technical regulations, must be observed. NOTE: The circuits inside the device must not be accessed. Do not repair the device yourself, replace it with an equivalent device. Repairs may only be carried out by the manufacturer. NOTE: The device must not be subject to mechanical strain and/or thermal loads, which exceed the limits described in these operating instructions. NOTE: The device is only designed to meet IP20 protection in a clean and dry environment. In order to provide protection against mechanical or electrical damage, install the device in corresponding housing with a suitable degree of protection according to IEC Where dust is present, install the device in suitable housing with at least IP5x protection. 4.2 Safety Regulations for Installation in Potentially Explosive Areas The device is an associated item of equipment and must not be installed in potentially explosive areas. Regulations for Intrinsically Safe Circuits When carrying out measurements on the intrinsically safe side, observe the relevant regulations regarding the connection of intrinsically safe equipment. Only use devices approved for use in intrinsically safe circuits. If the device has been used in nonintrinsically safe circuits, it must not be used again in intrinsically safe circuits. The module must be clearly labeled as nonintrinsically safe. For the safety data, please refer to the operating instructions and certificates (ECtype examination, other approvals, if necessary). Installation in Areas With a Danger of Dust Explosions The device is not designed for use in areas with a danger of dust explosions. Connection to the intrinsically safe circuit in areas with a danger of dust explosions (zone 20, 2, and 22) is only permitted if the equipment connected to this circuit is approved for this zone (e.g., category D, 2D or 3D). 0289_00_en PHOENIX CONTACT 4

5 4.3 UL/CUL Approval 0289_00_en PHOENIX CONTACT 5

6 5 Structure 7 Installation a PIExMESD/24/65C V DC PIExMESD/24/65C Art.Nr.: NOTE: Electrostatic discharge The device contains components that can be damaged or destroyed by electrostatic discharge. When handling the device, observe the necessary safety precautions against electrostatic discharge (ESD) according to EN and EN The device should only be transported and stored in its original packaging. GELB YELLOW R U0 7. Mounting 4 [EEx ia] IIC [EEx ib] IIC APPROBATIONEN / APPROVALS 99 If the device has been used in nonintrinsically safe circuits, it must not be used again in intrinsically safe circuits. The module must be clearly labeled as nonintrinsically safe. Figure 2 Structure Yellow LED, for indicating the input state 2 COMBICON plugin screw terminal blocks (to release with a flatbladed screwdriver, push out laterally) 3 Direction for removing the screw terminal blocks 4 Metal lock for fixing on the DIN rail Mount the device on a 35 mm DIN rail according to EN The device is calibrated by default upon delivery. For this reason, subsequent calibration of the zero point and final value is not provided. Before startup, check that the solenoid driver is operating and wired correctly, especially with regard to the wiring and labeling of the intrinsically safe circuits. 6 Basic Circuit Diagram Ex area + Safe area IV R i Connecting the Cables Plugin screw terminal blocks; fit the litz wires with ferrules. Install intrinsically safe and nonintrinsically safe cables separately. Permissible cable crosssection: 0.2 mm 2 to 2.5 mm IV R i Figure 3 Basic circuit diagram with connection terminal blocks 0289_00_en PHOENIX CONTACT 6

7 7.3 PreStartup Checklist Before starting the device, make sure that the following conditions have been observed using the technical data: Checkpoint OK Operating conditions have been observed? Correct polarity has been selected for all connections? No impermissibly high voltage in the output circuits during startup? Output load corresponds to the permissible values according to "Output" on page 2? Output circuit grounded at no more than one location? All power supply values correct? 8 Comparison of Safety Data Safety data of: Compare the safety data before connecting a device located in the Exi area to the PIEXME2SD/24/65C. Field devices: U i, I i, P i, L i, C i Solenoid driver: U o, I o, P o, L o, C o For the values for U o, I o, P o, L o, and C o, please refer to "Safety Data According to ATEX for Intrinsically Safe Circuits" on page 3. Exi Requirements: U i U o I i I o P i P o L i + L c L o C i + C c C o (L c and C c depend on the cables/lines used) 9 Calculating a Valve Circuit R I Solenoid driver Figure 4 Equivalent circuit In order to connect a solenoid valve to the device, it is also necessary calculate the measurements in addition to comparing the safety data. R i : Internal resistance of the solenoid driver : Guaranteed voltage of the solenoid driver without load I V : Maximum current that the solenoid driver can supply R C : Maximum permissible cable resistance when connecting the solenoid driver and valve R SV : Effective coil resistance of the solenoid valve (the copper resistance of the coil depends on the temperature) I SV : The current required by the solenoid coil for the valve to pick up U SV : The voltage present at the coil with I SV R SV and U SV depend on the ambient temperature due to the copper resistance. The values for R SV and I SV must be obtained from the valve manufacturer. The values for R i and can be found in the technical data under "Output" on page 2. The permissible cable resistance can be determined according to the following formula: Recommendation: RC = R i R SV I SV I SV R C U SV For R C, an actual cable resistance of +25 Ω should be calculated. In the event of a negative resistance, a successful connection is no longer guaranteed. Function requirements: I V I SV and R C > 0 Ω. R SV Valve A list of suitable valves can be found in the Download Center at _00_en PHOENIX CONTACT GmbH & Co. KG Blomberg Germany Phone: PHOENIX CONTACT P.O.Box 400 Harrisburg PA 7000 USA Phone: