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7.1.2
External DC – Power Supply
In case of external power supply from a direct current source it has to be connected to
the ETC like shown in the following connection drawing.
ETC
24R
ETC
14R
ETC
12R
ETC
12/14/24
7.1.3
Passive Running Reserve Battery
All ETC-models have a passive running reserve. The fitted lithium battery saves all data
and operates the internal RTC (Real Time Clock). After a power failure, the master clock
time is again at the precise time. The lithium battery is already fitted and connected upon
delivery. Where a master clock has not been in use for over 2 years, the lithium battery
should be replaced. When the master clock is connected, the lithium battery has a
service life of at least 15 years.
External DC power supply ETC 12R
24 VDC
1 A
-
+
External DC power supply ETC 14R
24 VDC
1.5 A
-
+
External DC power supply ETC 24R
24 VDC
1.5 A
-
+
ETC 12: 1 A
ETC 14/24: 1.5 A
External DC power supply ETC 12/14/24
24 VDC
-
+
