Connect The Motor Thermistors (Chemical And Atex Compliant Eh Pumps Only); Electrical Supply Configuration A; Electrical Supply Configuration B; Motor Cable-Gland Hole Sizes - Edwards EH500 Instruction Manual

A301-51-880 Issue T
6. Connect the wires of the cable to the appropriate terminals, as shown in the wiring instructions supplied with
the pump motor, or if in doubt the appropriate Figure specified in Table 20.
7. Tighten the cable-gland.
8. If you have a chemical or ATEX compliant EH pump, continue at Section 3.6.3 to connect the motor thermistors,
otherwise refit the terminal-box cover to the motor.
Table 19 - Motor cable-gland hole sizes
Electrical supply cable- Thermistors cable-gland
*
Pump type Motor frame size
gland hole size (ISO) hole size (ISO)
Safe area EH pumps 90, 100 20 -
132 25 -
160 32 -
Chemical EH pumps and ATEX 100 20 20
compliant
160 32 20
*
As shown on the motor label.
3.6.3

Connect the motor thermistors (chemical and ATEX compliant EH pumps only)

The flameproof motors on all chemical and ATEX compliant EH pumps incorporate thermistors.
You must connect the thermistor terminals in the motor to a suitable control circuit, to shut down the EH pump
system if the motor temperature is too high. An example control circuit is shown in Figure 12.
You must use a suitable two-wire cable and a suitable cable-gland (see Step 2) to connect the thermistors cable (from
your control circuit) to the thermistor terminals in the motor.
Use the following procedure to connect the thermistor terminals to the control circuit.
1. Remove the plug from the cable-entry hole that you will use for the thermistors cable. (If there is more than one
cable-entry hole, choose the most suitable hole for your application.)
2. Fit a suitable cable-gland to the cable-entry hole. The cable-gland (and adaptor, if fitted) must provide a
protective seal to IP44 (or higher), as defined by IEC 529. Refer to Table 19 for the cable-gland hole sizes.
3. Pass the thermistors cable through the cable-gland.
4. Connect the two wires of the cable to the appropriate terminals, as shown in Figure 13 to 21 (refer to
5. Tighten the cable-gland.
6. Refit the terminal-box cover to the motor.
7. Connect the thermistor wires to your control circuit.
© Edwards Limited 2007. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
A301-51-880 Issue T
Table 20 - Electrical supply connection configurations
Motor Motor Item Motor voltage (V) Motor Frequency
Configuration
*
supplier Number (connection) power (Hz)
A071-12-004 1.5 kW
460 60 A
A071-13-076 2.2 kW
Leroy
A071-12-004 1.5 kW
208-230 60 B
A071-13-076 2.2 kW
A071-12-003 1.5 kW
A071-14-001 3 kW
Brook
A071-12-024 1.5 kW
380-415 50 C
A071-14-020 3 kW
A071-13-075 2.2 kW
Leroy
A071-14-006 3 kW
A071-12-003 1.5 kW
A071-14-001 3 kW
Brook
A071-12-024 1.5 kW
220-240 50 D
A071-14-020 3 kW
A071-13-075 2.2 kW
Leroy
A071-14-006 3 kW
WEG A071-18-017 380-415 (delta) 11 kW 50 D
Leroy A071-18-015 380-415 (delta) 11 kW 50 D
A071-18-021 11 kW
380-415
50 D
(direct delta start)
A071-18-015 11 kW
A071-12-004 1.5 kW
460
60 E
(star)
Brook A071-12-025 1.5 kW
A071-12-004 1.5 kW
208-230
60 F
(double star)
A071-12-025 1.5 kW
A071-14-012 460 4 h.p. 60 G
A071-18-019 460 (delta) 11 kW 60 E
WEG
A071-18-019 230 (double delta) 11 kW 60 H
A071-14-002 4 h.p.
A071-14-021 4 h.p.
A071-18-016 15 h.p.
460
60 E
(delta)
A071-18-022 15 h.p.
A071-17-002 10 h.p.
A071-17-029 10 h.p.
Brook
A071-14-002 4 h.p.
A071-14-021 4 h.p.
208-230
60 I
(double delta)
A071-17-002 10 h.p.
A071-17-029 10 h.p.
A071-18-016 15 h.p.
230
60 I
(double delta)
A071-18-022 15 h.p.
*
As shown on the label on the motor.
© Edwards Limited 2007. All rights reserved.
Edwards and the Edwards logo are trademarks of Edwards Limited.
Table 20).
Page 31
Refer to
Figure
13
14
15
16
16
16
16
17
18
19
17
20
17
21
21
Page 33
A301-51-880 Issue T
Figure 12 - Example control circuit
1. Electrical supply isolator
5. Start switch 9. Pump motor
2. +ve control side 6. Fault indicator lamp 10. Contactor
3. Thermistor relay 7. Pump contactor 11. Circuit breaker
4. Stop switch
8. 0 V control side
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Edwards and the Edwards logo are trademarks of Edwards Limited.
A301-51-880 Issue T
Figure 13 - Electrical supply configuration A
1. Thermistors cable 5. Electrical supply cable Note: The thermistor terminals may
2. Cable-gland 6. To control circuit
be annotated "T1" and "T2"
3. Terminal/wire markings
instead of "P1" and "P2".
4. Cable-gland
Figure 14 - Electrical supply configuration B
1. Thermistors cable 6. Electrical supply cable Note: The thermistor terminals may
2. Cable-gland 7. To control circuit be annotated "T1" and "T2"
instead of "P1" and "P2".
3. Links
4. Terminal/wire markings
5. Cable-gland
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Edwards and the Edwards logo are trademarks of Edwards Limited.