ABB ETL600 - Page 193

ETL600 1KHW001489-EN ABB Switzerland Ltd
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 – 1a / 1b (Telephony connection strip in Fig. 6-13)
Output – 2a / 2b (Telephony connection strip in Fig. 6-13)
Port AF2:
Input – 3a / 3b (Teleoperation connection strip in Fig. 6-13)
Output – 4a / 4b (Teleoperation connection strip in Fig. 6-13)
Port AF3:
Input – 5a / 5b (Teleoperation connection strip in Fig. 6-13)
Output – 6a / 6b (Teleoperation connection strip in Fig. 6-13)
Port AF4:
Input – 7a / 7b (Teleoperation connection strip in Fig. 6-13)
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 November 2005 6-17