Edwards nEXT300 User Manual

4.5.4 Connect the electrical supply
WARNING: POWER SUPPLY
Risk of damage t
o equipment. A separate power supply (not included) is necessary
for the product. The power supply must be protected against a hazardous live
condion (for example, a short circuit).
WARNING: ELECTRICAL ISOLATION DEVICE
Risk of damage to equipment. Install an applicable isolaon device in the electrical
supply. Make sure that the switch is easy to access and marked as disconnecng
device for the pump. Failure to do so can cause failure to set the pump to o in an
emergency.
WARNING: HOT SURFACE
Risk of injury or damag
e to equipment. Install an applicable fuse (as given in Logic
interface connector on page 31), in the 24 ‑ 48 V supply line to the pump. To protect
the pump in the fault condion, use an applicable rated fuse (refer to Table: Logic
interface technical data). The power supply must have a current rang capable of
blowing the fuse. Failure to do so can cause the hazardous surface temperature of
the pump or risk of a re hazard.
WARNING: SUPPLY VOLTAGE
Risk of damage t
o equipment. Make sure that the maximum supply voltage is not
more than necessary voltage. Failure to do so can cause permanent damage to the
control electronics and can cause mechanical hazard in failure condions.
WARNING: HOT SURFACE
Risk of injury or damag
e to equipment. When you connect the pump to the power
supply, make sure that all 3 pins for the 24 - 48 V connecon and all 3 pins for the 0 V
connecon on the customer connector mang half are connected to the power
supply. Failure to do so can cause the overheang of the connectors.
Refer to Figure: Logic int
erface connecons - parallel control for a schemac diagram of
the logic interface connecons.
The electrical supply for the pump must meet the requirements of BS EN 61010‑1/
C22.2 1010‑1. Make sure that the hazardous voltages given in EN61010 are not available
on the electrical interface to the pump.
The pump 0 V is not referenced to ground. Make sure that there is only one path
between 0 V and ground. Do not make mulple connecons between 0V and ground to
prevent the oset voltages on control and status signals and problems with serial
communicaons. If there is no connecon available between 0 V and ground, make the
connecon at the power supply. Other electrical equipment connected to the system
can make a connecon between 0 V and ground, for example a personal computer or a
measuring equipment.
04/2022 - ©Edwards Limited
Page 45B80000880_G
B80000880_G - Inst
allaon

Edwards nEXT300 Specifications

General

Brand	Edwards
Model	nEXT300
Category	Water Pump
Language	English