Information On Operation In An Ar Switch Chain; System Times; Wiring An Ar Switch Chain; Number Of Devices In Switch Chains - EUCHNER MGB-L0 AR Series Operating Instructions Manual

11.11. Information on operation in an AR switch chain

11.11.1. System times

AR
The interlocking module has longer reaction times than a CES-AR switch (see chapters 13. Technical data on page
32 and 13.1. Typical system times on page 33).

11.11.2. Wiring an AR switch chain

To prevent earth loops, the wiring should be in a star configuration (see Figure 18).
terminating plug
FI1A/FI1B
#1 CES-AR
FO1A/FO1B
FI1A/FI1B
#2 CES-AR
FO1A/FO1B
FI1A/FI1B
CES-AR
#3
FO1A/FO1B
+ 24 V DC
0 V
Important: lay cables in a common harness
Figure 18: Central wiring of an AR switch chain in the control cabinet

11.11.3. Number of devices in switch chains

In a pure MGB switch chain a maximum of ten devices can be connected in series. In mixed switch chains (e.g. MGB
together with CES-AR) the maximum number of devices is also ten.

11.11.4. Resetting in switch chains

2112657-13-05/18 (translation of the original operating instructions)
#4 #5
MGB-L.-AR...
UB 0V UA 0V
FI1A/ FO1A/
FI1A/
FI1B FO1B
FI1B
Important!
Use the reset input (RST) for resetting in AR switch chains. All devices in the chain must be
reset simultaneously. Resetting individual switches will result in faults.
Operating Instructions Safety Systems
MGB-L0...-AR.-... and MGB-L0...-AP.-...
MGB-L.-AR...
UB 0V UA 0V
FO1A/
FO1B
PLC
cabinet
EN
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