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Refer to Table 43 on page 91 for suitable fuse rangs.

WARNING:

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 condions.

WARNING:

When connecng the pump to the power supply, ensure 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 ulise all of the power pins can lead to

overheang of the connectors.

The electrical supply provided for the nEXT85 pump must meet the requirements of UL61010-1

and EN61010-1. Ensure that hazardous voltages as dened in UL61010-1 and EN61010-1

cannot be present on the electrical interface to the nEXT85 pump.

The nEXT85 pump 0 V is not referenced to earth (ground). Ensure that there is only one path

between 0 V and earth. Mulple connecons between 0V and earth must be avoided in order

to avoid unexpected oset voltages on control and status signals and possible problems with

serial communicaons. If no other connecon is present between 0 V and earth, the

connecon should be made at the power supply. Be aware that other electrical equipment

connected to the system could introduce a connecon between 0 V and earth, for example a

personal computer or measuring equipment.

Connect the parallel control and monitoring

Connecons for parallel control and monitoring must be made using a suitable mang half that

is not supplied.

CAUTION:

If using the normal and fail lines to drive the coils of dc 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 44 on page 93, 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 control 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).

B8G0-00-880A - Install the nEXT85

Page 27

Edwards nEXT85 User Manual

Other manuals for Edwards nEXT85