Omron NX-SL3300 User Manual page 157

Safety Input Unit
Test Pulse Evaluation
Test Pulse Evaluation
The following parameters are also used.
• Single/Dual
• Discrepancy Time
l Single/Dual
Set the evaluation method to use with the safety input terminals.
Setting
Single Channel
Dual Channel Equivalent
Dual Channel Complementary The safety input terminals are used as dual-channel-complementary inputs.
Safety Mat/Safety Edge
l Discrepancy Time
For two inputs set in a Dual Channel Mode, the time is monitored from a change in the value of one
input to a change in the value of the other input. An error occurs if the value of the other input does
not change within the set discrepancy time.
The discrepancy time can be set to any of the following eight values between 500 ms and 64,000
ms.
1: 500 [ms], 2: 1000 [ms], 3: 2000 [ms], 4: 4000 [ms], 5: 8000 [ms], 6: 16000 [ms], 7: 32000
[ms], 8: 64000 [ms]
The discrepancy time cannot be set in Single Channel Mode.
l Relationship between the Single/Dual Setting and Safety Input Data
The signals that are input to safety input terminals are evaluated as shown in the following table.
This safety input data can be used in the safety program in the Safety CPU Unit.
• Relationship between Input Signals to Safety Input Terminals and Safety Input Data for Single-
channel Inputs
Single/Dual
Single Channel
• Relationship between Input Signals to Safety Input Terminals and Safety Input Data for Dual-
channel Inputs
NX-series Safety Control Unit User's Manual (Z930)
Safety input data
Dual channel
evaluation
Safety process data
communications
The safety input terminals are used as independent safety input terminals.
The safety input terminals are used as dual-channel-equivalent inputs.
The safety input terminals are used as safety mat/safety edge inputs.
Input signals on the safe-
ty input terminals
Si (x)
0
1
4 Safety Control Unit Operation
Safety CPU Unit
Safety program
execution
Description
Safety input data
Si (x)
0
1
Meaning of status
Inactive (OFF)
Active (ON)
n = Even number
4 - 25
4