• A loose or open connection
• An exceeded operational time limit
• A power drop
• An overtemperature condition
When a fault is detected, a message describing the fault displays in the Fault Diagnostics menu (LCD models). For models
not equipped with an LCD, use the Live Mode tab in the Software on a PC connected to Safety Controller with the SC-
USB2 cable. Fault diagnostics are also available over the network. An additional message may also be displayed to help
remedy the fault.
Note: The fault log is cleared when power to the Safety Controller is cycled.
13.4.1
XS/SC26-2
Fault Code Table
Fault Code
Displayed Message
Additional Message
Steps to resolve
1.1
Output Fault
Base Module or Solid
State Module
Check for shorts
Relay Module
n/a
Base Module or Solid State Module
A Safety Output appears On when it should be Off:
•
Check for a short to the external voltage source
•
Check the DC common wire size connected to the Safety Output
loads. The wire must be a heavy-gauge wire or be as short as possible
to minimize resistance and voltage drop. If necessary, use a separate
DC common wire for each pair of outputs and/or avoid sharing this DC
common return path with other devices (see
on page 51)
Relay Module
•
Replace Relay module
1.2
Output Fault
Base Module or Solid
State Module
Check for shorts
Relay Module
n/a
Base Module or Solid State Module
A Safety Output is sensing a fault to another voltage source while the output is
On:
•
Check for a short between Safety Outputs
•
Check for a short to the external voltage source
•
Check load device compatibility
•
Check the DC common wire size connected to the Safety Output
loads. The wire must be a heavy-gauge wire or be as short as possible
to minimize resistance and voltage drop. If necessary, use a separate
DC common wire for each pair of outputs and/or avoid sharing this DC
common return path with other devices (see
on page 51)
Relay Module
•
Replace Relay module
1.3 – 1.8
Internal Fault
-
Internal failure—Contact Banner Engineering (see
on page 155)
1.9
Output Fault
Internal Relay Failure
•
Replace Relay module
1.10
Output Fault
Check Input Timing
Sequence timing error:
•
Perform a System Reset to clear the fault
2.1
Concurrency Fault
Cycle Input
On a dual-channel input, or a complementary input, with both inputs in the Run
state, one input went to the Stop state then back to Run.
On a dual-complementary input, with both pairs of inputs in the Run state, one
pair of inputs went to the Stop state then back to Run.
•
Check the wiring
•
Check the input signals
•
Consider adjusting the debounce times
2.2
Simultaneity Fault
Cycle Input
On a dual-channel input, or a complementary input, one input went into the Run
state but the other input did not follow the change within 3 seconds.
On a dual-complementary input, one pair of inputs went into the Run state but
the other pair of inputs did not follow the change within 3 seconds.
•
Check the wiring
•
Check the input signal timing
XS/SC26-2 and SC10-2 Safety Controllers
148
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