Output Terminals - Mitsubishi Electric 800 Series Instruction Manual

4.3

Output terminals

Use the following safety parameters to select or change functions of terminals SY1 and SY2.
When functions are assigned to terminals SY1 and SY2, set Pr.S070 SY1/SY2 terminal test pulse diagnosis execution
selection and Pr.S071 SY1/SY2 terminal test pulse off time to perform fault diagnosis with test pulse signals.
Pr.
S055 SY1/SY2 terminal function selection
S070 SY1/SY2 terminal test pulse diagnosis
execution selection
S071 SY1/SY2 terminal test pulse off time
 Redundant output wiring
• By outputting signals having the same function via terminals SY1 and SY2, the function assigned to the terminals remains
effective when a fault occurs for one of the terminals.
 Self-diagnosis with test pulse signals
• While the output signals are ON, fault diagnosis of the output circuit (including external devices) is performed by outputting
test pulse signals to temporarily turn OFF the output signals.
• To perform fault diagnosis with test pulse signals, set Pr.S070 = "1".
• Test pulse signals are output at fixed intervals for terminals SY1 and SY2 while the signals assigned to the terminals are
ON. Test pulse signals are output for terminals SY1 and SY2 at different timings. Use Pr.S071 to set a time period during
which the signal is turned OFF by the test pulse signal. Set the time period so that external devices are not affected by
output of test pulse signals.
• When a fault is detected, "E.SAF" (fault detail code 61) is displayed.
 Output terminal response time
• 30 ms or less
Name Initial value
0
0
0
Output signal
ON
Test pulse OFF time
Terminal SY1 ON
Terminal SY2 ON
Setting range
0, 1 0: No function
1: SBC output (SBC) signal
0 Diagnosis disabled.
1 Diagnosis enabled.
0 2 ms
1 4 ms
ON
Test pulse OFF time
ON
4. I/O Signals for Safety Sub-Functions
3
4
Description
5
4
5
6
7
8
9
10
21
4.3 Output terminals