Edwards EXC 100E, Instruction Manual

Page: 25 / 42

© Edwards Limited 2015. All rights reserved. Page 19
Edwards and the Edwards logo are trademarks of Edwards Limited.
Installation
D396-20-880 Issue H
3.8 Connect an AIM Active Inverted Magnetron gauge (optional)
Use an Edwards Active gauge cable (available as an accessory: see Section 7.3.6 ) to connect an Edwards AIM Active
Inverted Magnetron Gauge to the Controller through the active gauge connector ( Figure 1 , item 5) on the rear of the
Controller.
If you want to connect another type of gauge to the Controller, connect the gauge to the logic interface: refer to
Section 3.9 .
3.9 Connect the logic interface to your equipment
3.9.1 Introduction
CAUTION
Do not earth (ground) the logic interface 0 V line (pins 13 and 14). If you do, you will provide an earth (ground)
return path for any electrical fault in the pump-motor and this could damage the Controller or your control
equipment.
Use the appropriate pins on a suitable mating-plug (not supplied) for the logic interface connector to connect your
control equipment and accessories to the Controller, as described in the previous sections and as shown in
Table 10
and Figure 4 . We recommend that you use wire of 0.24 mm
2
(or smaller) cross-sectional area.
Alternatively, if you do not connect the Controller to your control equipment, link pins 3 and 4 in the mating-plug.
The EXT pump will then start to operate as soon as the electrical supply to the Controller is switched on and the pump
will stop when the electrical supply to the Controller is switched off.
3.9.2 Connect a vacuum gauge to the logic interface
You can connect an Edwards APG Active Pirani Gauge to the Controller so that the setpoint output of the gauge sets
the Start/Stop input on the logic interface, to switch on the EXT pump. We recommend that you use the following
procedure:
1. Fit an active gauge connector to a suitable break-out box.
2. Connect wires from the break-out box to the logic interface on the Controller, as shown in Table 12 .
If you want to connect another type of gauge to the Controller, refer to the instruction manual supplied with your
gauge for information on the electrical connections to the gauge.
Table 12 - APG to logic interface connections
APG connector
pin number
Logic interface
pin number
1
2
3
4
5
6 6
14
-
-
-
3