Hydraulic power unit CE8L Technical data

Transcription

1 Hydraulic power unit CE8L 26/02/15 1/10

2 1 - PRESENTATION 1-1 Use The hydraulic power unit CE8L (fig.1) is intended to deliver an hydraulic pressure to open the emergency hydraulic brakes SH and TH. Fig Operating conditions Working conditions: - Ambient temperature: -10 C to +60 C - Relative humidity 70 % - Dust in atmosphere 65 µ - Protection against vertically falling waters. Other conditions, consult Stromag France. 2 - OPERATION 2-1 Flow diagram See fig Principle (fig. 5) a) Opening of the calipers 1-2 General characteristics The CE8L hydraulic power unit is fitted with a gear pump and a motor of 2,2 kw at 1500 rpm for a nominal flow rate of 8,4 l/mn (on network 50 Hz). The maximal utilization pressure is 225 bar. Frequency of operations = 100 operations / hour maximum The caliper can be installed horizontally (CE8L-H) or vertically (CE8L-V) (reservoir at the bottom). See flow diagram fig.5 and description fig.6. Calipers are closed by means of a single solenoid valve EV1 (NO). For installations requiring a high level of safety, we advise the option OP1 (2 EV). In additional, we recommend a device of permanent diagnosis of the solenoid valves operation (CS2EV) which allows the detection of a possible fault. When the hydraulic power unit is switched on, the solenoid valve EV1 (NO) closes and the motor M starts simultaneously. This motor drives the gear pump P1 which gives the oil pressure allowing the hydraulic calipers to open. The opening of the pressure switch CP1, included in the working circuit, stops the motor M when working pressure reaches the maximum set level. Then, the installation stays under pressure with the motor M stopped. If pressure lowers down to the minimum level, the switch closes and starts the pump motor M again. b) Closing of the calipers and braking Switching off the motor M and the solenoid valve EV1 brings the oil back to the power unit reservoir and the pressure back to zero. Calipers close and braking torque is applied. c) Manual opening of the calipers With the flow limiter LD1 closed, the hand pump P2 provides the necessary pressure to open the calipers, in case of mains failure or manual operations on the calipers. 26/02/15 2/10

3 2-3 Options Options of the CE8L power unit are described in the "Options" leaflet quoted in the bottom of the page. Table 1 below sums up all these options : Options Description Comments MS Motor 290/500VAC 50Hz or Motor 230/400 VAC with PTC sensor Other voltages, consult us. EVS EV coils voltage different from the standard K1 K2 Electrical power unit integrated to the hydraulic power unit, Input voltage 400V 3 phases 50 Hz V single phase 50 Hz Electrical power unit integrated to the hydraulic power unit, Input voltage 400V 3 phases 50 Hz. For CE8L standard and CE8L OP1. For the other voltages (MS and EVS), consult us. OP1 Enhanced security return circuit by 2 solenoid valves. - Noncumulable options with option Y5. - For monitoring device of the 2 EV OP1-OP2 Manual lowering with a dead man safety device. (CS2EV), conult us (APS). - To equip the hydraulic unit CE8L-OP1-OP3 OP1-OP3 Manual lowering with overspeed safety by solenoid valve 24VDC. with an electrical unit, consult us (APS). CS2EV Y5 OP4 Monitoring device of the 2 solenoid valves EV1 and EV2, consult us. The hydraulic unit is fitted with a proportional pressure limit valve for a regulated braking or the lowering of the load. The function of braking on/off is kept. Indicator switch of the position of the main control valve and of the lowering control valve (if option OP2 or OP3) For CE8L-OP1, CE8L-OP1-OP2, and CE8L-OP1-OP3. - Non cumulable option with options OP1, OP2 et OP3. - This option requires a specific electrical unit according to the control system (lowering of the load, constant deceleration, etc..), consult us (APS). - R option enables to limit the full braking torque, consult us (APS). OP5 Visual or electrical clogging Indicator OP6 Hydraulic unit for "iron and steel industry" with: 2 oil level sight glasses in pyrex no ventilation on the motor This option enables to work in atmospheres with high concentration of dust and at ambient temperature of 60 C in continuous (90 C at the peak < 2 minutes 6 times per hour maximum). OP8 Electrical indicator of the oil level in the reservoir OP10 Drip tray for hydraulic unit mounted horizontally For CE8L-V (vertical) hydraulic unit, CE8L-K1 and CE8L-K2, consult us RV Drain valve for reservoir 26/02/15 3/10

4 Options available requiring an adaptation (APS) : Options Description Remarques Z1 At the time of a braking order or a voltage failure, Z1 option allows a delay of caliper closing by maintaining a voltage on the coil of the solenoidvalve. (delay of 0,1 to 1,2 second). Option with specific K2 electrical unit. APS obligatory. Consult us. Z2 At the time of a braking order or a voltage failure, Z1 option allows a delay of caliper closing by maintaining a voltage on the coil of the solenoidvalve. (delay of 0,1 to 20 seconds). Option with specific K2 electrical unit. APS obligatory. Consult us. OP7 Thermostat 80 for the reservoir Consult us. 26/02/15 4/10

5 3 - CHARACTERISTICS 3-1 Designation a) Power unit (table 2) CE8L - XX - X - XX - voltage- frequency Unit type Example: Pressure switch setting Position H : horizontal V : vertical Options CE8L-20-V-OP6: hydraulic power unit CE8L with the maximum of the pressure limit switch set to 200 bar, fitted for a vertical mounting and steel plant environment. b) Calipers (table 2) SH15 - X Caliper type Example: SH15-3 Table 2 Braking force code Power unit type Calipers types Main limit valve LP Limit switch CP1 SH25 SH18 SH18B SH15 SH9 SH6 SH5 TH9 SHM10 mini/maxi Hand pump limit valve LP1 CE8L - 20 SH25-2 SH18-2 SH18B -- SH SH / CE8L SH15-3 SH9-2 SH / CE8L - 16 SH SH SH5-5 TH / CE8L SH SH15-1 SH9-1 SH6-2 SH / CE8L SH SH6-1 SH5-3 TH / CE8L SHM / The maximum number of calipers associated with the CE8L hydraulic unit is in the leaflet "Connection of a hydraulic unit" quoted below. Example: calipers SH15-3 are related to the supply unit CE8L-18. All the values LP, LP1 and CP1 are pressures given in bar. 26/02/15 5/10

6 3-2 Dimensions See fig Hydraulic characteristics a) Calipers associated See table 2. b) Mineral oil A mineral oil must be imperatively used. Characteristics conform to the standard ISO 6743/4. Choose a type in accordance with the temperatures of utilization. Grade L-HM or L-HV. Avoid to mix oils of types HM and HV. For oils with other characteristics, consult us. Refer to the leaflet "Oils" quoted in the bottom of the page. b) Solenoid valve EV1 Coil under 230 V RAC ± 10%, 50 or 60 Hz single phase with a rectifier bridge in the connector (20 W). Other optional voltages, option EVS: 48, 110 V RAC, 50 or 60 Hz - 24 V DC c) Pressure limit switch CP1 - Single-pole and snap-acting contact "OC" - Protection: IP V AC, 1,5 A V DC, 0,1 A The reservoir capacity is : Horizontal or vertical installation : - High level = 8 litres - Low level = 6 litres 3-4 Electrical characteristics a) Motor M 3 phase: 230/400 VAC 50 Hz 2.2 kw, 4 poles Protection IP 55 class F Aluminium body, metallic terminal box, brass cable gland Other 3 phase voltage on option MS : 290/500VAC 50Hz 230/400VAC 50Hz with PTC sensor To specify according to table 3. Table 3 Mains 3 phases Motor /Y Frequency 50 Hz 230/400VAC 50Hz STD VAC ±10% 50Hz 230/400VAC 50Hz + PTC MS 230/400VAC 50Hz Y STD VAC ±10% 50Hz 230/400VAC 50Hz Y + PTC MS 440VAC ±10% 50Hz 255/440VAC 50Hz Y APS VAC ±10% 50Hz 290/500VAC 50Hz Y MS VAC ±10% 50Hz 400/690VVAC 50Hz Y APS Frequency 60 Hz VAC ±10% 60Hz 230/400VAC 60Hz APS VAC ±10% 60Hz 230/400VAC 50Hz STD VAC ±10% 60Hz 230/400VAC 60Hz Y APS VAC ±10% 60Hz 230/400VAC 50Hz Y STD VAC ±10% 60Hz 290/500VAC 50Hz Y MS STD = standard / MS = option / APS = adaptation, consult us. 26/02/15 6/10

7 d) Wiring examples (fig. 2 and 3) The whole wiring connections are to be realised by the customer following examples fig. 2 and 3. Fig. 2 3 phase mains + T Single phase supply Fig. 3 3 phase mains + T F1 F1 0V T1 230V F2 KM1 I> I> I> H1 B KF P x 1 KM1 Braking / release control EV1 KM1 I> I> I> V H1 B1 13 Braking / KF release control P x 1 KM1 EV M 3 Pressure limit switch CP1 M 3 Pressure limit switch CP1 Motor M Motor M provided by Stromag France provided by Stromag France On option, an electrical control system K1 (fig. 2) or K2 (fig. 3) is mounted integral with the hydraulic unit to simplify the customer wiring. The customer supplies the alternative current and braking/release control (KF). See "Options" leaflet quoted below 26/02/15 7/10

8 Fig.4 - Dimensions , , holes Ø9 332 Weight : 54 kg without oil Representation: CE8L-H (horizontal position) 26/02/15 8/10

9 Fig. 5 - Flow diagram of the hydraulic power unit 1G Caliper Caliper CP1 1Q Power unit PP LD1 CA4 CA1 LP1 EV1 CA3 CA5 Hand pump P2 CA2 LP F BR1 M P1 CR R BV Components: BR1 BV CA1 CA2 CA3 CA4 CA5 CP1 CR EV1 F Filling port Draining port 1/4"G Check valve Check valve Hand pump check valve Hand pump check valve Check valve Pressure switch Suction strainer Solenoid valve Filter LD1 LP LP1 M P1 P2 PP R 1G 1Q Flow limiter Main pressure limit valve Hand pump pressure limit valve Electrical motor Gear pump Hand pump Pressure port Reservoir Manometer Isolation cock of the manometer 26/02/15 9/10

10 Fig. 6 - Components of the hydraulic unit CE8L standard (shown in horizontal version) Pressure switch CP1 Manometer 1G High level sight glass Isolation cock 1Q Low level sight glass Filling port BR1 (breather replaced by a tight plug for option OP6) Draining port 1/4"G (BV) Output 1/2"G Hand pump P2 Reservoir R Motor M Filter F LP Hand pump lever Pressure port PP Solenoid valve EV1 Flow limiter LD1 Pressure limit valve LP1 Pressure port PP Main pressure limit valve LP Hand pump P2 26/02/15 10/10