Rishabh RISH LM 1340, Operating Manual

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Note
: In case of Alarm - Low if trip point is set greater than 80% then the maximum hysteresis can be set such that
the total Trip point+ Hysteresis(% of trip point value) will not exceed 120% of range.
For example :If trip point is set at 90%, then maximum 33.3% hysteresis should be set such that, [90 + 29.99
(33.3% of 90)] = 120.
ON Delay:
The ON delay can be set in the range from 1 to 9999 seconds to Energize the Relay.
OFF Delay:
The OFF delay can be set in the range from 1 to 9999 seconds to De-energize the Relay.
Examples of different configurations
Parameter No. 4 (Current1)
Trip Point = 50%
Hysteresis = 50% of trip point
ON Delay: 2 sec
OFF Delay: 2 sec
Input
Relay Energise
Relay De-energise
Trip point
Hysterisis point
Time
50%
25%
2s 2s
1) Alarm - High & Relay - Energised
Input
Relay De-energise
Relay Energise
Trip point
Hysterisis point
Time
50%
25%
2s
2s
2) Alarm - High & Relay - De-energised
Input
Relay De-energise
Relay Energise
Hysterisis point
Trip point
Time
75%
50%
2s 2s
3) Alarm - Low & Relay - Energised
Input
Relay Energise
Relay De-energise
Hysterisis point
Trip point
Time
75%
50%
2s 2s
4) Alarm - Low & Relay - De-energised
Relay can be operated for ANDing or ORing of upto three parameters listed in TABLE 3, e.g., Watt Sum,
Frequency and PF can be Ored on the single relay with separate settings of these parameters.
Logic Operation:
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