25 Safety Bus Manual — P/N LS10177-000HI-E:B 02/21/2019
System Components SB-SIM/GM Module
3.3.2 Visual Indicators
The front panel of the module feature 19 LEDs that indicate the following conditions:
3.3.3 Connections
The SB-SIM/GM module features the following connectors:
Terminal Block TB1
This terminal block supplies power to the module.
Terminal Block TB2
This terminal block connects the two ring communication links.
Tag Color M Mode Condition
RUN Green
O On Solid Normal operation
Off Module failure or no power
LK1-Fault
+Leakage
Yello w
O Off Communication on Link LK1 present
Blinking Link LK1 towards board interrupted
On Solid Communication failure on Link LK1
Pulsing on/off Positive earth leakage
LK2-Fault
-Leakage
Yello w
O Off Communication on Link LK2 present
Blinking Link LK1 towards board interrupted
On Solid Communication failure on Link LK2
Pulsing on/off Negative earth leakage
L1-L8 Red
O Off Channel in normal state
Blinking Channel in pre-alarm
On Solid Channel in alarm
L1-L8 Yellow
O Off Channel in normal state
Blinking Channel fault (module or line)
On Solid Channel disabled
NOTE: During the startup sequence, the yellow and red LEDs blink 3 times, then the seven red
LEDs L1-L7 will go on for 2 seconds to indicate the module address in binary format (L1=1, L2=2,
L3=4, L4=8, L5=16, L6=32, L7=64). At this point, the eight yellow LEDs L1-L8 will begin to blink
rapidly until the module is configured by the panel.
Pin Tag Function
1 +V 24VDC Power supply positive
2 +V 24VDC Power supply positive
3 -V 24VDC Power supply negative
4 -V 24VDC Power supply negative
Pin Tag Function
1 -LK1 Link-1 Negative
2 +LK1 Link-1 Positive
3 SLK1 Link-1 Screen
4 -LK2 Link-2 Negative
5 +LK2 Link-2 Positive
6 SLK2 Link-2 Screen
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