EUCHNER CES-AR-C01 Series User Manual

13
2098039-20-02/20 (Translation of the original operating instructions)
Operating Instructions
Non-Contact Safety Switch CES-AR-C01-…
EN
9.5.1. Determining cable lengths using the example table
Example: 6 switches are to be used in series. Cabling with a length of 40m is routed from a safety relay in the control
cabinet to the last switch (#6). Cables with a length of 20m each are connected between the individual safety switches.
CES-AR # 6
Sicherheits-
relais
Safety Relay
CES-AR # 5 CES-AR # 4 CES-AR # 3
CES-AR # 2 CES-AR # 1
l
1
= 40 m
l
2
= 5 x 20 m
l
max
= 140 m
l
n
= 20 m
u
n
= min. 19,2 V
i
out
= min. 75 mA
Figure 1: Circuit example with six CES-AR
A safety relay is connected downstream that 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 switches). In this case: 6 switches.
2. In column I
OUT
(possible output current per channel OA/OB), nd a current greater than or equal to 75mA. In this case:
100mA.
¨ It is then possible to determine the maximum cable length from the last switch (#6) to the control system from column
l
1
. In this case, 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.

EUCHNER CES-AR-C01 Series Specifications

General

Brand	EUCHNER
Model	CES-AR-C01 Series
Category	Switch
Language	English