7
Electrical installation
Built-in encoder EI7C FS
Manual – MOVISAFE
®
CS..A Safety Card (Version 2)
67
INFORMATION
In case of a short circuit, a high short-circuit current can occur for a short time. De-
pending on the DC 24 V supply voltage used, this can cause a voltage dip that limits
the operation of MOVIDRIVE
®
modular or MOVIDRIVE
®
system and/or individual as-
semblies.
If the voltage supply is not stable enough, it may result in a reset and a restart of the
MOVISAFE
®
CS..A safety card.
•
Make sure the DC 24 V voltage supply does not collapse in the event of output
short circuits.
7.7
Built-in encoder EI7C FS
7.7.1
Features
The EI7C FS built-in encoder is a safe incremental encoder with 24 signal periods per
revolution.
The MOVISAFE
®
CS..A can detect a minimum speed of 60 min
-1
in connection with the
EI7C FS built-in encoder.
The MOVISAFE
®
CS..A evaluates the signal of the EI7C FS built-in encoder.
The MOVISAFE
®
CS..A and the EI7C FS built-in encoder monitor the encoder signal.
The MOVISAFE
®
CS..A safety card detects interruptions and crossfaults in the en-
coder line. If a fault occurs, the MOVISAFE
®
CS..A activates the drive safety function
STO in the MOVIDRIVE
®
modular or MOVIDRIVE
®
system, and the torque is switched
off safely.
Use only the EI7C FS built-in encoder in connection with MOVISAFE
®
CS..A.
7.7.2
Installation
Use a shielded cable to connect the EI7C FS built-in encoder to the matching encoder
inputs of a MOVIDRIVE
®
modular or MOVIDRIVE
®
system.
WARNING
Incorrect wiring can disable the encoder function and monitoring features for the en-
coder.
Severe or fatal injuries.
•
The encoder may be connected only to the MOVISAFE
®
CS..A safety card.
•
The encoder signals may be connected only to the terminals of a MOVIDRIVE
®
modular or MOVIDRIVE
®
system intended for this purpose. It is not permitted to
connect other devices or assemblies.
INFORMATION
•
The encoder cable must not carry any TF signals when an EI7C FS built-in en-
coder is connected to the MOVIDRIVE
®
modular or MOVIDRIVE
®
system.
•
The MOVISAFE
®
CS..A safety card can detect a minimum speed of 60 min
-1
in
connection with an EI7C FS built-in encoder.
28482271/EN – 03/2019
