Edwards nEXT730D User Manual

Figure 20 Power supply connector
CS/5037/B
3
2
1
1. +48V DC Supply 2. 0V Supply
3. Chassis
1. +48V DC Supply 2. 0V Supply
3. Chassis
5.5 Connect the parallel control and monitoring
Connecons for par
allel control and monitoring must be made using a suitable mang
half that is not supplied.
NOTICE:
If using the normal and fail lines t
o 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 mang half. Refer to Table: Logic interface connector pins, which
idenes the logic interface connector pins.
The control inputs are Start and Standby speed. To acvate 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 connecon 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 con
trol input but is not required in a system operang purely
under parallel control. Make sure that there is no connecon to serial enable (pin
5).
Note:
The RS485/CAN/R
S232 slide switch must be in the (default) RS232 posion to use
the standby or fail parallel interface signals, refer to Connect the serial interface to
the customer control equipment on page 60.
2. To monitor analogue output, connect the customer control equipment to the
pump analogue output (pin 9) and to pin 2 of the cus
tomer logic interface mang
half.
When the pump is shipped, the analogue output is congured to monitor pump
rotaonal speed. To monitor other parameters, re-congure the nEXT pump using
commands over the Serial Interface. Refer to Connecon for serial control and
monitoring on page 59 for further details.
3. To monitor the normal status output, connect the customer control equipment to
the normal st
atus output (pin 15) and to pin 2 of the customer logic interface
mang half.
08/2021 - ©Edwards Limited
Page 58B8J200880_D
300812671_002_C3
B8J200880_D - Inst
allaon

Edwards nEXT730D Specifications

General

Brand	Edwards
Model	nEXT730D
Category	Water Pump
Language	English