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2.8 Trip by External Devices
Up to four binary signals EXT. MECHANICAL TRIP1 to EXT. MECHANICAL TRIP4 can be
used for tripping external devices. Figure 2.8.1 shows the scheme logic for the signal
EXT_MEC.TP1. The signal can trip up to five breakers. Any of the tripping signals
EXT_MEC.TP1-1 to EXT_MEC.TP4-5 can be blocked by the scheme switches [M.T1-1] to
[M.T1-5] setting.
Note: Models 203 and 204 are not provided with EXT_MEC.TP1-4 and EXT_MEC.TP1-5, and
[M.T1-4] and [M.T1-5].
The other binary signals have the same scheme logic.
EXT_MEC.TP1-1
[M.T1-1]
&
+
&
&
&
&
EXT. MECHANICAL TRIP1
1536
≥1
357
MEC.TRIP1
[M.T1-2]
+
[M.T1-3]
+
[M.T1-4]
+
[M.T1-5]
+
EXT_MEC.TP1-2
EXT_MEC.TP1-3
EXT_MEC.TP1-4
EXT_MEC.TP1-5
Figure 2.8.1 Scheme Logic of Trip by External Device
Setting
The following shows the setting elements for tripping by external devices and their setting ranges.
Element Range Step Default Remarks
Scheme switch
EXT_MEC.TP1-1 to -5
EXT_MEC.TP2-1 to -5
EXT_MEC.TP3-1 to -5
EXT_MEC.TP4-1 to -5
Off/On
(*)
Enable or disable tripping
(*): Default settings are dependent on the model. See Appendix H.