Edwards nEXT200200 - Page 43

WARNING: ELECTRICAL ISOLATION DEVICE
Risk of damag
e 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 injur
y or damage to equipment. Install an applicable fuse (as given in Logic
interface connector on page 27), 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 on page 27). 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 damag
e to 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 injur
y or damage 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 interface connecons - parallel control on page 40 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.
Refer to Table: Logic interface connector pins on page 28 when you connect the
electrical supply to the customer connector mang half.
Page 39
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tallaon