3.4
Elec tri cal con nec tions
3.4.1
In tro duc tion
Use a suitable connector mating half (not supplied) to connect the electrical
supplies and your control equipment to the connector on the logic interface cable
(Figure 1, item 3). When you make the electrical connections to the EXDC
described in the following sections, refer to Table 1 for full details of the logic
interface connections and to Figure 3 for a schematic diagram of the connections.
Pin number Signal
Polarity Use
1
Start/Stop control input
-
Close * to start EXT
pump.
2
TMP Normal status output
-
Closed * when EXT
pump speed is 80%
or more of full
rotational speed.
3
Earth (ground)
-
4
Pump speed analogue output
Positive
5, 6
Electrical supply: 0 V
-
7, 8
Electrical supply: 80 V
Positive
* With respect to pins 5 or 6.
Table 1 - Logic interface connector pins
3.4.2
Con nect the logic in ter face to your con trol equip ment
1. Connect your control equipment to the start/stop control input pins of your
logic interface mating half to start/stop the EXT pump as required:
•
Link (close) the start/stop con trol in put (pin 1) to pins 5 or 6 to start the
EXT pump.
•
Un link (open) the start/stop con trol in put (pin 1) from pins 5 or 6 to stop
the EXT pump.
2. Connect your control equipment to the pump speed analogue output (pin 4)
and to pins 5 or 6 of your logic interface mating half to monitor the speed
output of the EXDC.
(Continued on page 10)
8
EXDC Tur bo mo lecu lar Pump Drive Mod ules
