D396-20-880 Issue H
Page 18
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Installation
3.5
Connect the electrical supply
You must use a suitable electrical supply cable to connect the Controller to the electrical supply. An electrical supply
cable is not supplied with the Controller, but is available as an accessory: refer to
.
1. Connect the wires at one end of the electrical supply cable to a suitably rated and fused electrical supply; if
required, connect the wires to a suitably rated plug. Connect the wires as shown in
2. Fit the connector on the other end of the electrical supply cable to the electrical supply connector on the front
of the Controller (see
).
3.6
Connect additional earth (ground) bonding (if required)
Protective earthing (grounding) for electrical safety of the Controller, EXT pump and accessories is provided by the
electrical supply cables and connectors and the pump-to-controller cable. However, additional earth (ground)
bonding may be required to improve the reliability of the system by reducing any effects of RFI (radio frequency
interference), particularly if the vacuum system is prone to high voltage discharges or other radio frequency
emissions.
Use good EMC (electromagnetic compatibility) practices and take note of the following EMC earthing (grounding)
guidelines to reduce the susceptibility of the system to RFI:
Connect the Controller, the EXT pump and the vacuum chamber to a common earth (ground) point on the
pumping system; this ‘star’ earth (ground) is typically in the electrical power distribution box.
Clamp the Controller earthing (grounding) terminal between the two lock-nuts provided on the earth
(ground) stud on the rear panel of the Controller.
Use suitable heavy duty cable or braid to ensure a low impedance bond to the earth (ground) point (typically
less than 0.1
for each leg of the star).
Use screened cable for all wiring to the logic interface connector. (The TAV5 vent-valve and the ACX Air
Cooler accessories are provided with screened cable.) Connect each screen to the Controller earth (ground)
stud to ensure that they are properly earthed (grounded).
3.7
Connect the EXT pump
If you have an EXC100L Controller, fit the connector on the end of the integral pump-to- controller cable to the
connector on the EXT pump.
If you have an EXC100E Controller, use a pump-to-controller cable (not supplied) to connect the Controller to the
EXT pump. Fit the connectors on the ends of the cable to the appropriate mating-halves on the rear of the Controller
and on the EXT pump.
WARNING
High voltages exist in the Controller when it is operating. Ensure that the Controller is earthed
(grounded) and observe all appropriate safety precautions for the safe installation and handling of
electrical equipment. If you do not, there will be a danger of injury or death to people by electric
shock.
Table 11 - Electrical supply cable wires
Wire colour
Use
Green/yellow
Earth (ground)
Brown
Live (line)
Blue
Neutral
