Peter electronic VersiSafe, Assembly And Commissioning Instructions

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VersiSafe 5
4. Function
The VersiSafe is connected to the motor terminals and measures the induced back emf voltage of
a freewheeling motor. 2 redundant measuring channels are used (L2-L1 and L3 L1). If the back
emf voltage drops to 0 simultaneously in both channels this indicates standstill and the output
relay is energised.
To adopt the unit to all different types of motors and applications the voltage threshold indicating
standstill on VersiSafe is adjustable. Also the time delay between detection and energisation of
the relay is adjustable (standstill time t
s
).
In addition the unit detects broken wire on the measuring inputs L1 / L2 / L3. If broken wire is
detected the output relays goes into safe state (as with running motor). This state is stored and
can be reset by bridging terminals X3-X2.
The input signals of both channels are permanently compared. If the signals are different for more
then 2.5 sec a simultaneity failure isdetected. This failure resets when both input channels
receive simultaneous signals with the same level.
To the terminals X1-X2 the feedback circuit of external contactors (used for contact
reinforcement) is connected (NC contact). If no feedback circuit is required, these terminals must
be linked. Open terminals will cause a failure message.
Circuit diagram
Warning:
The terminals X1 - X2 - X3 has no galvanic separation to the measuring ciruit
L1 - L2 - L3. They must be controlled with volt free contacts.
X1 11
53
12
A3
+
A1
X2 23
L2
24
A4
A2
X3 33
54
34
ON
43
L1 L3
44
ERR
M9163_d
11 23 33 43 53 A3+
ON ERR 24 34 44 54 A4 12
K1
K2