![background image](http://html1.mh-extra.com/html/sick/rely-hand1/rely-hand1_operating-instructions-manual_1264572019.webp)
Pin assignment
Figure 9: Terminals on front connector
Table 3: Pin assignment of the terminals
Terminal
Description
13, 14
1)
2)
Enabling current path
23, 24
1)
2)
Enabling current path
I1
Safety capable input for control device A, normally open
I2
Safety capable input for control device A, normally closed
I3
Safety capable input for control device B, normally open
I4
Safety capable input for control device B, normally closed
S1
2)
3)
External device monitoring input (EDM)
Y1
Application diagnostic output (NC)
A1
Voltage supply 24 V DC
A2
Voltage supply 0 V DC
1)
The enabling current paths must be supplied by the same voltage supply.
2)
The enabling current path and external device monitoring (EDM) must be wired within the control cabinet.
3)
•
Use with external device monitoring (EDM): Connect N/C contacts of the controlled actuators
between voltage supply U
V
and S1.
•
Use without external device monitoring (EDM): Connect U
V
and S1 with a wire jumper.
Complementary information
To protect and increase the service life of contact outputs, equip all connected loads
with varistors or RC elements. The response times will increase depending on the sup‐
pressor used.
Further topics
•
"Connection diagrams", page 13
ELECTRICAL INSTALLATION
6
8020872/ZX84/2018-11-15 | SICK
O P E R A T I N G I N S T R U C T I O N S | ReLy HAND1
19
Subject to change without notice