Safety Bus Manual — P/N LS10177-000HI-E:B 02/21/2019 30
SB-SCM Module System Components
3.5 SB-SCM Module
This module can control eight 500mA outputs for controlling solenoid valves with safety-related
functions. All the channels are tested every 3 seconds during operation.
3.5.1 Technical Specifications
3.5.2 Visual Indicators
The front panel of the module features 19 LEDs that indicate the following conditions:
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.
• Wiring: Class B Style Y
• Max channel current: 500 mA
• Short-circuit threshold: current >0.75-1.5 A
• Open circuit threshold: current <0.5-9.5 mA
• Channel test: performed every 3 seconds
• Power supply voltage: 24VDC
• Current consumption in stand by: 98mA
• Operating temperature:
0 to 49 °C (32 to 120.2 °F)
• Storage temperature:
-55 to 85 °C (-67 to 185°F)
• Max humidity: 0-95% non condensing
• Protection rating: IP30
• Mounting: T35 DIN rail
• Dimensions:
53 x 167 x 100 (W x H x D mm) (2.1” x 6.6” x 4”)
• Weight: approx. 600g (21 oz.)
• Connections: 2.5mm² removable terminal blocks
• Max. Line Impedance: 20 ft (6.096 m) in the same room, in conduit
• Ground Fault Impedance: </ 500 ohms
• Max distance between two modules: 20 ft (6.096 m) in conduit
Tag Color Mode Condition
RUN Green
On Solid Normal operation
Off Module fault or no power
LK1-Fault Yellow
Off Communication on Link LK1 present
Blinking Link LK1 towards board interrupted
On Solid Communication failure on Link LK1
LK2-Fault Yellow
Off Communication on Link LK2 present
Blinking Link LK2 towards board interrupted
On Solid Communication failure on Link LK2
L1-L8 Red
Off Channel inactive
On Solid Channel active
L1-L8 Yellow
Off Channel in normal state
Blinking Channel fault (module or line)
On Solid Channel disabled
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