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Chapter 3
Tab. 3: Controls of the
Standstill Monitor MOC3ZA
Tab. 4: Terminal assignment
of the Standstill Monitor
MOC3ZA
WARNING
52
© SICK AG • Industrial Safety Systems • Germany • All rights reserved
Product description
LED
Display
Off
PWR
Green
Red
Green
OUT
Green
Yellow
Off
ERR
Red
Red
Meaning of the symbols:
The LED is illuminated constantly. The LED is flashing. The LED is off.
Control
Rotary switch U
an
Rotary switch t
s
3.3
Terminal assignment
Terminal
L1/L2/L3
41/42
13/14, 23/24, 33/34
53/54
S1/X1
S2/X1
A1 (+U
)/A2 (GND)
B
A3 (+U
)/A4 (GND)
B
ON
ERR
Do not use the outputs 53/54, ON or ERR for safety purposes!
The signal contacts 53/54 as well as the outputs ON and ERR are only used for signaling
purposes and may not be used for safety circuits!
Meaning
No supply voltage
Supply voltage is present
Internal device error
The outputs are released.
Standstill time t
s elapsed
The voltage on at least one of the measurement channels
(L1/L2/L3) exceeds the voltage threshold U
The device is operating correctly.
Internal device error
Error in the measurement circuit, error in the external
device monitoring or excessively low supply voltage U
(see Fig. 10 "Error codes on the ERR LED in order of
priority" on page 67)
Function
Voltage threshold (U
) setting for standstill detection
an
Standstill time (t
) setting for enabling the safety
s
contacts
Usage
Measurement channels, connections to the motor
Positively guided N/C contacts
Safety contacts (normally open contact)
Signal contacts (normally open contact)
Connection for feedback circuit (External device
monitoring, EDM)
Deletion of errors caused externally
Supply voltage (PWR) of the device
Supply voltage for the semiconductor outputs
Semiconductor application diagnostic output for output
state of the safety contacts
Semiconductor application diagnostic output for error
message
Operating instructions
MOC3ZA
.
an
B
8014608/1DS0/2022-02-16
Subject to change without notice
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