Rockwell Automation 1756-L71S, Quick Start Manual, Page: 108 / 200

108 Rockwell Automation Publication IASIMP-QS005H-EN-P - April 2016
Chapter 4 SmartGuard™ 600 Controllers Logic Integration
Configure SmartGuard 600 Local Inputs and Test Outputs
The SmartGuard 600 local input and test output configuration is dependent on the input device type, input relationship,
and fault detection requirements. All the inputs and test outputs are pre-configured for volt-free contact devices to
perform the diagnostics necessary to achieve the safety category level indicated by the pre-configured *.dnt file name. Use
the following steps and table recommendations to configure the safety inputs and test outputs.
Table 10 - Typical Safety Input Device Configuration Parameters
Input Device Type Category
Channel
Mode
Test Source On-Off Delay Time Off-On Delay Time
Dual
Channel
Mode
Discrepancy
Time

Error
Latch
Time Test
Output
Mode
Volt-free contacts

(2 Normally Closed)
4 Test pulse
from test
output Ch A: Test
Output(x),

Ch B: Test
Output(x+1)
(1)
Cycle Time x 2
(2)
Cycle Time x 2 Dual Channel
Equivalent 100 1000 Safety
Pulse Test
3 Used as
safety input Not Used Cycle Time x 2 Cycle Time x 2 Dual Channel
Equivalent 100 1000 Safety
Volt-free contacts

(1 Normally Closed,

1 Normally Open)
4 Test pulse
from test
output Ch A: Test
Output(x),

Ch B: Test
Output(x+1)(1
)
Cycle Time x 2 Cycle Time x 2 Dual Channel
Equivalent 100 1000 Safety
Pulse Test
3 Used as
safety input Not Used Cycle Time x 2 Cycle Time x 2 Dual Channel
Equivalent 100 1000 Safety
Volt-free contacts

(1 Normally Closed)
2 Test pulse
from test
output Test Output(x) Cycle Time x 2 Cycle Time x 2 Single
Channel N/A 1000 Safety
Pulse Test
2 channel OSSD

(Output Signal
Switch Device)
4
(3)
Used as
safety input Not Used 0 0 Dual Channel
Equivalent 0 1000 Not Used
3
(4)
Used as
safety input Not Used 0 0 Dual Channel
Equivalent 0 1000 Not Used
1 channel OSSD 2
(5)
Used as
safety input Not Used 0 0 Single
Channel N/A 1000 Not Used
(1) Dual channels require different test sources.
(2) Time must be multiple of cycle-time.
(3) Must be a Cat. 4 capable OSSD.
(4) Must be a Cat. 3 capable OSSD.
(5) Must be a Cat. 2 capable OSSD.