Connect The Parallel Control And Monitoring; Figure 20 Power Supply Connector - Edwards nEXT730D Instruction Manual

Figure 20 Power supply connector

3
1. +48V DC Supply 1. +48V DC Supply
3. Chassis 3. Chassis

5.5 Connect the parallel control and monitoring

Connections for parallel control and monitoring must be made using a suitable mating
half that is not supplied.
NOTICE:
If using the normal and fail lines to drive the coils of d.c. relays, include a back EMF
suppression diode in parallel with each relay coil to protect the pump.
1. Connect the customer control equipment to the control input pins of the customer
logic interface mating half. Refer to
identifies the logic interface connector pins.
The control inputs are Start and Standby speed. To activate either of these control
inputs, connect the control input pin to the 0 V control reference. To start the
pump, connect pin 3 (Start / Stop) to pin 2 (0 V Reference). To stop the pump,
break the connection between pin 3 and pin 2. To put the pump into standby,
connect both pin 4 (Standby) and pin 3 (Start / Stop) to pin 2 (0 V reference).
Note:
Serial enable is also a control input but is not required in a system operating purely
under parallel control. Make sure that there is no connection to serial enable (pin
5).
Note:
The RS485/CAN/RS232 slide switch must be in the (default) RS232 position to use
the standby or fail parallel interface signals, refer to
the customer control equipment
2. To monitor analogue output, connect the customer control equipment to the
pump analogue output (pin 9) and to pin 2 of the customer logic interface mating
half.
When the pump is shipped, the analogue output is configured to monitor pump
rotational speed. To monitor other parameters, re-configure the nEXT pump using
commands over the Serial Interface. Refer to
monitoring
3. To monitor the normal status output, connect the customer control equipment to
the normal status output (pin 15) and to pin 2 of the customer logic interface
mating half.
B8J200880_D
300812671_002_C3
B8J200880_D - Installation
1
2
on page 60.
on page 59 for further details.
Page 58
2. 0V Supply 2. 0V Supply
Table: Logic interface connector
Connect the serial interface to
Connection for serial control and
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pins, which