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<6. Parameters>
IM 05E01D02-41E
1st Edition : May 31,2000-00
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Hysteresis (Setpoints for On-Off Control and PV Event Setpoints)
Hysteresis can be set in on-off control setpoints and PV event setpoints as well. With the
hysteresis settings, it is possible to prevent relays from chattering.
•
When hysteresis is set in an on-off control setpoint
Setpoint
Point of on-off action
(Program setpoint)
Hysteresis
Output
On
Off
Hysteresis (H): Operating parameter
•
When hysteresis is set in a PV event setpoint
Setpoint
Point of on-off action
(PV event setpoint)
Hysteresis
Output
On
Off
Example of hysteresis set in PV input high limit alarm
PV event-1 hysteresis (HY1): Setup parameter
PV event-2 hysteresis (HY2): Setup parameter
Summary of Contents for UP350
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