FF-SR05936 Standstill Monitor
FF-SR Series
FEATURES
• Designed for Category 1 Emergency
Stop functions per EN 418
• Monitors back EMF generated by
3-phase and single phase inductive
(Pending)
S
uitable for interfaces
up to
motors
CATEGORY 1
per EN 954-1
• Compatible with frequency variators
• No motor impedance limit
• Broken wire detection on monitoring
circuit
• Positive-guided output contacts: two
NO, two NC for AC 250 V
• Green LED’s indicate stopped motor and
power status
• Red LED indicates Z1-Z2 line breakage
status
• Mechanical life up to ten million
operations
• Electrical life up to one million
operations
If the stopping time of the machinery is unpredictable, use the FF-SR05936 Stand-
still Monitor.
This module measures (between Z1/Z2) the back EMF of the disconnected motor
from the terminals of one stator winding. When the EMF has decreased near zero,
the FF-SR05936 detects that the motor has stopped and energizes its output relays.
• Switching current up to 10A
• Voltage drop protection
• 45 mm (1.77 in.) width
In addition, FF-SR05936 monitors the connections to the motor for broken wires on
terminals Z1, Z2.
If an open (line break) is detected, the output relay contacts latch in the de-energized
position as if the motor was running. After the break has been repaired, the module
is reset by removing power to the module momentarily.
APPLICATIONS
• Stopped motor monitor for three phase
and single phase asynchronous motors
• Used to unlock a door which is guarding
a rotating machine only when the
movement is stopped
• Used to activate an emergency brake
!
WARNING
MISUSE OF DOCUMENTATION
•
The information presented in this product sheet (or catalogue) is for reference only. DO NOT USE this document as system
installation information.
•
Complete installation, operation and maintenance information is provided in the instructions supplied with each product.
Failure to comply with these instructions could result in death or serious injury.
FF-SR05936
• Industrial Safety Products •
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