Edwards nEXT730 - Connect the Electrical Supply

B8J200880_E - Installation
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CAUTION:
This product requires a separate power supply (not included). The power supply
should be adequately protected against a hazardous live condition (for example, in
case of a short circuit).
CAUTION:
Do not exceed the maximum supply voltage. Excessive supply voltage will cause
permanent damage to the control electronics and may result in a mechanical hazard
in some failure conditions.
5.4.4 Connect the electrical supply
Refer to Table: Logic interface technical data for suitable fuse ratings.
The electrical supply provided for the nEXT pump must meet the requirements of
UL61010-1 and EN61010-1. Ensure that hazardous voltages as defined in UL61010-1 and
EN61010-1 cannot be present on the electrical interface to the nEXT pump.
The nEXT pump 0 V is not referenced to earth (ground). Ensure that there is only one
path between 0 V and earth. Multiple connections between 0V and earth must be
avoided in order to avoid unexpected offset voltages on control and status signals and
possible problems with serial communications. If no other connection is present
between 0 V and earth, the connection should be made at the power supply. Be aware
that other electrical equipment connected to the system could introduce a connection
between 0 V and earth, for example a personal computer or measuring equipment.
To operate the nEXT pump using the customer’s own electrical supply, use a suitable
connector mating half (not supplied) to connect the electrical supply to the connector
on the pump power supply cable.
CAUTION:
Incorporate a suitable fuse or current limiting device in the 48 V d.c. supply line to
the pump. If this is not done and a fault develops, the pump may develop a
hazardous surface temperature or present a fire hazard.
CAUTION:
Incorporate a suitable Emergency Stop Switch in the electrical supply. Locate the
switch in an easily accessible position and mark it as the emergency disconnecting
device for the pump. Failure to do so will result in not being able to switch off the
pump in an emergency.