ABB ETL600 Instruction Manual page 193

ETL600
There are four 4-wire input / output ports available: AF1, AF2, AF3 and
AF4.
Port AF1 is normally used for telephony. When speech is not
necessary this port can be used for teleoperation channel.
Port AF1:
Input
Output – 2a / 2b (Telephony connection strip in Fig. 6-13)
Port AF2:
Input
Output – 4a / 4b (Teleoperation connection strip in Fig. 6-13)
Port AF3:
Input
Output – 6a / 6b (Teleoperation connection strip in Fig. 6-13)
Port AF4:
Input
Output – 8a / 8b (Teleoperation connection strip in Fig. 6-13).
External protection signaling equipment has to be connected to port
AF4 only. Boosting (terminal 9a) for external protection equipment is
activated by positive potential provided on terminal 9b. I.e. the
protection signaling equipment should provide a potential free contact.
Assembly and Installation
1KHW001489-EN
– 1a / 1b (Telephony connection strip in Fig. 6-13)
– 3a / 3b (Teleoperation connection strip in Fig. 6-13)
– 5a / 5b (Teleoperation connection strip in Fig. 6-13)
– 7a / 7b (Teleoperation connection strip in Fig. 6-13)
ABB Switzerland Ltd
November 2005 6-17