Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
3.1.7 REDUNDANT MODE CONTROL, CONFIGURATION & DIAGNOSTICS.
The CM4 Common Module uses certain commands and controls, which are specific to redundant
protection.
3.1.7.1 Front-panel mode slide switch.
The CM4 has a front-panel mode slide switch which is operational only on the Standby Module. This
switch either forces the Main or the Standby module to become active, or allows automatic switchover
(swap) operation. The location of the switch is shown in Figure 3-6.
This switch has top-most priority, and will override any other consideration, such as whether the
desired active module is actually operating properly or if it even exists.
The available switch selections are “MAIN” (activate Main Module), “STBY” (activate Standby
Module) or “AUTO” (allow automatic operation).
Equip Mon Equip Mon Group CONFIG FUNCTION ON SET R-MAIN EXT ERR FRM
E1 Out E1 In BRD OK OFF NEXT C-AUTO INT LPBK BPV
ACTIVE L-SLAVE LOOP TX RX
M
DE
E1 OUTPUT
TEST JACKS
E1 INPUT
TEST JACKS
GROUP SWITCH
ACTIVITY INDICATORS
4-CHARACTER
FUNCTION DISPLAY
ON/OFF BI-LEVEL
DISPLAY
SET/NEXT SWITCH
3-POSITION
MODE SLIDE SWIT
CH
FRONT PANEL
LED INDICATORS
Main
Auto
Standby
Figure 3-6. Front panel mode slide switch
IMUX 2000E1 RFL Electronics Inc.
January 23, 2004 3-9 (973) 334-3100
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