EUCHNER ESL-IH-AR - Manual (Page 13)

Operating Instructions ESL
13
A safety relay is connected downstream which consumes 75 mA at each of the
two safety inputs. This operates over the whole temperature range with a voltage
of 19.2 V (corresponds to 24 V -20%).
All the relevant values can now be determined using the example table:
1. Select the corresponding section in the column n (max. number of devices).
Here: 6 switches.
2. In column I
OD
(possible output current per channel FO1A/FO1B), find a current
greater than or equal to 75 mA. Here: 100 mA.
¨ The maximum cable length from the control system to the start of the switch
chain is listed in column l
1
. Here: a length of 50 m is permitted.
Result: The desired cable length l
1
of 40 m is below the permitted value from the
table. The overall length of the switch chain l
max
of 140 m is less than the maximum
value of 200 m.
¨ The planned application is therefore functional in this form.
Connector assignment
Coding lug
View on the connection side of the safety switch
1
7
6
5
4
3
2
8
8
2
7
6
1
3
4
5
UB
0V
FI1A
FI1B
FO1A
FO1B
OD
RST
Figure 2: Connector assignment
Pin Designation Description
Wire color as per
DIN 47100
1 FI1B Enable input for channel 2 white
2 UB Power supply, DC 24 V brown
3 FO1A Safety output, channel 1 green
4 FO1B Safety output, channel 2 yellow
5 OD Monitoring output gray
6 FI1A Enable input for channel 1 pink
7 0V Ground, DC 0 V blue
8 RST Reset input for hardware reset red