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Current Sensing Relay
The granulator can be equipped with an optional current sensing relay to
control the feed equipment.
The current sensing relay detects the mill motor current consumption and
can temporarily stop accessories such as conveyors, roller feeders etc to
avoid putting further material into the hopper, when the mill is running
under heavy loading.
The relay stops and re-starts accessory equipment automatically,
without re-setting.
Relay functions and normal settings:
T1 – Start delay, prevents the relay from breaking
on connection (0.1 - 10 sec).
The default start delay is 0.1 seconds.
T2 – Reaction time, prevents the relay from breaking
during temporary high loading (0.1 - 3 sec).
Default reaction time is 3.0 seconds.
A – Hysteresis, adjustable between 5 - 50%
of the set limit.
Default hysteresis is 20 %.
B – Limit value, adjustable between 0 - 100 %.
Default setting depends on the current transformer size.
Check the current transformer size and then check the
default setting for this granulator.
C – Relay function, N = normal; I = inverted;
A T2 B
C T1
9
Wiring Diagram
Wiring Diagram l 9-3