The signal ground is available on pins 18, 19, 22 and 25.
Caution:
The monit
or/download port is not electrically isolated against induced voltages on
the communications channel. It should therefore only be used for local
communications.
3.8.3 USING A MONITOR PORT TEST BOX
A test box containing eight LEDs and a switchable audible indicator is available. It is housed in a small plastic box
with a 25-pin male D-connector that plugs dir
ectly into the monitor/download port. There is also a 25-pin female
D-connector which allows other connections to be made to the monitor/download port while the monitor/
download port test box is in place.
Each LED corresponds to one of the monitor bit pins on the monitor/download port. Monitor Bit 1 is on the left-
hand side when viewed from the front of the IED. The audible indicator can be selected to sound if a voltage
appears on any of the eight monitor pins. Alternatively it can be set to remain silent, using only the LEDs.
P64x Chapter 19 - Commissioning Instructions
P64x-TM-EN-1.3 413
To Next Page
Loading...
