Plus rM and
PM™
Units
2.
Mode
Trip Unit
Figure
44.
Logic diagram for accessory configurations.
Rear of Trip U nit
Push in
this side
to disable
0> CJ1
-1:>
W N --'
Push in
this side
to enable
Figure
45.
Accessory configuration switch on rear of Trip Unit,
showing factory settings (solid part indicates that switch is
pushed in on that side).
Description of Switch Settings
Following are descriptions of the effects of each
accessory switch when it is
enabled:
1.
When a Shunt Trip or Shunt Trip with Lockout
accessory causes the breaker to trip, the
contacts of the Bell Alarm-Alarm Only also
change state. The factory switch setting is
disabled .
2.
When an Undervoltage Release accessory
causes the breaker to trip, the contacts of the
Bell Alarm-Alarm Only also change state. The
factory switch setting is
disabled .
24
Factory
Switch
Setting
Function
Shunt Trip or Shunt Trip with
1
Disabled
Lockout activates Bell Alarm-
Alarm
2
Disabled
UVR
trip activates Bell Alarm-
Alarm
3
Enabled Protection trip activates Bell
Alarm-Alarm
Shunt Trip or Shunt Trip with
4
Disabled
Lockout activates Bell Alarm
with Lockout
5
Disabled
UVR
trip activates Bell Alarm
with Lockout
6
Enabled Protection trip activates Bell
Alarm with Lockout
Table
17.
Accessory configuration switch settings, including
factory defaults.
3.
When a protection trip (long-time, short-time,
instantaneous, ground-fault, or protective
relay) occurs, the contacts of the Bell Alarm
Alarm Only also change state. The factory
switch setting is
enabled.
4.
When the Shunt Trip or Shunt Trip with
Lockout accessory causes the breaker to trip,
the contacts of the Bell Alarm with Lockout
also change state. The factory switch setting is
disabled .
5.
When the Undervoltage Release accessory
causes the breaker to trip, the contacts of the
Bell Alarm with Lockout also change state. The
factory switch setting is
disabled .
6.
When a protection trip (long-time, short-time,
instantaneous, ground-fault, or protective
relay) occurs, the contacts of the Bell Alarm
with Lockout also change state. The factory
switch setting is
enabled.
To change switch settings on RMS9D series Trip
Units, refer to Chapter 5 to remove the Trip Unit
from the breaker. Push in the appropriate Enable or
Disable side of the switch to configure the accesso
ries,
as
shown in Figure 46, and carefully reinstall the
Trip Unit. Verify that the new switch settings are
correct by testing the breaker responses to
Undervoltage Release trips and Shunt trips.
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