Rockwell Automation 440C Guardmaster 440C-CR30 Configurable Safety Relay User Manual - Manual (Page 62)

62 Rockwell Automation Publication 440C-UM001C-EN-P - November 2014
Chapter 9 Safety Monitoring Functions
For a valid Restart operation, according to the requirements specified in the
approved safety concept, you must use the default Restart timing and leave the
input filter setting “0”.
The filter setting is enabled in CCW versions smaller than Rev 7. A filter time
setting greater than “0” extends the Reset Timing by 2 x Filter Time.
Figure 60 - Wiring Connection for a Restart Signal to Terminal 02 with Inputs on
Terminals 00 and 01
Safety Mat Four wire safety mats can be connected to the CR30. The four wires create two
channels. Stepping on the safety mat creates a short circuit between channel 1
and 2. To detect the short circuit, input pulse testing is used. The mats must be
connected to the input test pulses.
Figure 61 - Safety Mat Function Block
The safety mat can be connected to the following terminals:
• EI_00…EI_11 (embedded input terminals 00…11)
• MP_12…MP_17 (multi-purpose terminals 12…17)
You can use the default Discrepancy Time and Input Filter or choose to modify
these settings.
For input test pulses, terminals 12…17 are available. The CCW automatically
selects another test pulse pattern for each input.
An example schematic shows a safety mat that is connected to terminals 0 and 1.
The mat uses test pulses that are generated at terminals 12 and 13.
+24V DC
24V Com
05
CR30
02 01 00 03 04
A1 15 20 21 16
06
18 A2
07
19
08 10 11
12 13 14
09
17
Restart