68 P/N 133487
Banner Engineering Corp. • Minneapolis, U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
SC22-3 Safety Controller
Instruction Manual
Troubleshooting and Maintenance
8.3.1 Troubleshooting Table
Fault Code
Displayed
Message
Additional
Message
Further Steps and Checks
0.0 Input Fault Cycle Input
Input fault detected momentarily.
• Check for unstable input signal
• Turn input OFF to clear the fault indication
1.1 Output Fault Check for shorts
A safety output appears ON at power-up when it should be OFF.
• Check for short to external voltage source.
1.2 Output Fault Check for shorts
A safety output is sensing a fault to another voltage source.
• Check for short between safety outputs.
• Check for short to external voltage source.
• Check load device compatibility (too much capacitance?).
1.3 – 1.6 Internal Fault Internal failure – Contact Banner Engineering.
1.7 Output Fault Check for shorts
An overload is detected on the safety outputs.
• Check each output terminal for a short to ground or overload condition (a fault
on only one output may cause other outputs to indicate a fault).
• Verify system power supply rating with system load requirements.
1.8 Internal Fault Internal failure – Contact Banner Engineering.
2.1
Concurrency
Fault
Cycle Input
On a dual-channel input with both inputs in the Run state, one input went to the
Stop state then back to Run.
• Check wiring.
• Check input signals.
• Consider adjusting debounce times.
2.2
Simultaneity
Fault
Cycle Input
On a dual-channel input, one input went into the Run state but the other input did
not follow within 3 seconds.
• Check wiring.
• Check input signal timing.
2.3 or 2.5
Concurrency
Fault
Cycle Input
On a complementary pair with both inputs in the Run state, one of the inputs
changed to Stop then back to Run.
• Check wiring.
• Check input signals.
• Check power supply providing input signals.
• Consider adjusting debounce times.
2.4 or 2.6
Simultaneity
Fault
Cycle Input
On a complementary pair, one input went into the Run state but the other input
did not follow within the time limit.
• Check wiring.
• Check input signal timing.
2.7 Internal Fault Check Terminal xx Internal failure – Contact Banner Engineering.
2.8 – 2.9 Input Fault Check Terminal xx
Input stuck high.
• Check for shorts to other inputs or other voltage source.
• Check input device compatibility.
2.10 Input Fault Check Terminal xx • Check for short between inputs.
2.11 - 2.12 Input Fault Check Terminal xx • Check for short to ground.
2.13 Input Fault Check Terminal xx
Input stuck low.
• Check for short to ground.
2.14 Input Fault Check Terminal xx
Missing test pulses.
• Check for short to other inputs or other voltage source.
2.15 Open Lead Check Terminal xx • Check for open lead.
2.16 – 2.18 Input Fault Check Terminal xx
Missing test pulses.
• Check for short to other inputs or other voltage source.