•
2 control devices, each with normally closed and normally open
3.2.4
External device monitoring
Permanent external device monitoring can be implemented using external wiring.
3.2.5
Status indicators
LEDs
PWR
OUT
13
23
I1
Y1
14
24
I2
A2
R
E
L
Y
I3
S1
A1
I4
PWR
OUT
13
23
I1
Y1
14
24
I2
A2
R
E
L
Y
I4
A1
I3
S1
HAND1
1085346
Figure 2: LEDs
The labeled positions are only partially assigned LEDs. The positions and their labeling
(except for the upper 2 lines) also show the pin assignment of the terminals on the front
connector.
Table 1: Safety relay indicators
Labeling
Color
Function
PWR
Green/Red
Voltage supply
OUT
Green
Enabling current paths
I1
Green
Safety capable input for con‐
trol device A, normally open
I2
Green
Safety capable input for con‐
trol device A, normally closed
I3
Green
Safety capable input for con‐
trol device B, normally open
I4
Green
Safety capable input for con‐
trol device B, normally closed
S1
Green
External device monitoring
input (EDM)
Y1
Green
Application diagnostic output
Further topics
•
"Status indicator (LED)", page 21
3
PRODUCT DESCRIPTION
10
O P E R A T I N G I N S T R U C T I O N S | ReLy HAND1
8020872/ZX84/2018-11-15 | SICK
Subject to change without notice