Edwards nEXT85 User Manual

Earth (ground) connecons
Edwards recommend ng a separate earth (ground) conductor to earth the nEXT85 pump.
Earth the pump using the connecon provided. Refer to Figure 11 on page 84, Figure 12 on
page 85, Figure 13 on page 85 and Figure 14 on page 85.
Use an uninsulated braid or a separate insulated green/yellow connector and use an M5 x 10
screw and shake-proof washer supplied (ed to the earth hole on the pump) to secure the
earth connector to the pump. The size/rang of this grounding conductor should be large
enough to protect against other equipment within the customer system. The impedance
between the pump body and the earth connecon point must be < 0.1Ω.
TIC or TAG logic interface connecons
If an Edwards TIC Turbo Instrument Controller, TIC Turbo Controller or TAG Controller are used
to power and control the pump, the nEXT85 pump logic interface cable connects directly into
the back of the TIC or TAG. Refer to the TIC or TAG
Instrucon Manuals for further informaon.
The RS485/RS232 slide switch must be in the RS232 posion if either the TIC or TAG is to be
used to control the nEXT85 pump. Refer to Connect the serial interface to the customer control
equipment on page 29. If the switch is in the RS485 posion, the TIC will connect to the pump
in parallel mode, indicang the pump type as nEXTp; the serial connecon will be disabled, but
start and stop will be possible. If the switch is in the RS485 posion, the TAG will not connect to
or control the pump at all.
Connect the logic interface to control equipment
To operate the nEXT85 pump using the customer's own control system, use a suitable
connector mang half (not supplied) to connect the control equipment to the connector on the
logic interface cable.
Refer to Table 43 on page 91. When making the electrical connecons to the nEXT85 pump,
refer to Table 44 on page 93 for full details of the logic interface connector pins.
Connect the electrical supply
WARNING:
This product requires a separate power supply (not included). The power supply should be
adequately protected against a hazardous live condion (for example, in case of a short
circuit).
WARNING:
Incorporate a suitable Emergency Stop Switch in the electrical supply. Locate the switch in
an easily accessible posion and mark it as the emergency disconnecng device for the
pump. Failure to do so will result in not being able to switch o the pump in an
emergency.
WARNING:
Incorporate a suitable fuse or current liming device in the 24 - 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 re hazard.
B8G0-00-880A - Install the nEXT85
Page 26

Edwards nEXT85 Specifications

General

Brand	Edwards
Model	nEXT85
Category	Water Pump
Language	English