The set points within the programmable kW relay functions can be changed from the display, and are as follows:
Programmable Trip Point #N Trigger Condition (Choices: Disabled, Trip Above Threshold, Trip Below Threshold) - This selects whether the output will be active if the value is above or below the threshold.
Programmable Trip Point #N Percentage Threshold (Range: -100-100%) - This is the threshold of rated kW that the function must pass in order to change the state of the output.
Programmable Trip Point #N Hysteresis Percentage (Range: -100-100%) - Once the output is on, the value must return by this much past the threshold before the output turns off again. For example, if this value is 5% and the percentage threshold is 90%, then the relay will activate at 90% but not turn off again until 85% of rated kW (90-5). This hysteresis is used to ensure that a value close to the threshold does not cause the output to oscillate.
Programmable Trip Point #N Trip Activation Delay Time (Range: 0-120 seconds) - This is the time that the value must exceed the threshold before the relay becomes active. It is used to ensure that the momentary transients are ignored.
Configuring the Programmable KW Relay from the Display
To configure a programmable kW relay with the display, follow the Steps below:
- At the main menu, select "CONFIGURE". Press the "OK" key.
A screen like Illustration 2 appears.
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Illustration 2 g02276326 - Select "ALL SETPOINTS". Press the "OK" key.
A screen like Illustration 3 appears.
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Illustration 3 g02276327 - Select "PROG KW RELAY TRIP". Press the "OK" key.
A screen like Illustration 4 appears.
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Illustration 4 g02276330 - Select the "PROG kW RELAY TRIP" to program. Press the "OK" key.
A screen like Illustration 5 appears.
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Illustration 5 g02276331 - Press the "OK" key to highlight the current configuration.
A screen like Illustration 6 appears.
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Illustration 6 g02276332 - Select the type of "PROG KW RELAY TRIP #N TRIGGER CONDITION" to program. Press the "OK" key.
A screen like Illustration 7 appears.
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Illustration 7 g02276493 - Select "PROG KW RELAY TRIP #N PERCENTAGE THRESHOLD". Press the "OK" key to edit the current "PROG KW RELAY TRIP #N PERCENTAGE THRESHOLD".
A screen like Illustration 8 appears.
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Illustration 8 g02276333 - Select the "PROG KW RELAY TRIP #N PERCENTAGE THRESHOLD" to program. Press the "OK" key.
A screen like Illustration 9 appears.
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Illustration 9 g02276335 - Select "PROG KW RELAY TRIP #N HYSTERESIS PERCENTAGE". Press the "OK" key to edit the current "PROGRAMMABLE TRIP POINT FUNCTION #N HYSTERESIS PERCENTAGE".
A screen like Illustration 10 appears.
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Illustration 10 g02276394 - Select the "PROG KW RELAY TRIP #N HYSTERESIS PERCENTAGE" that you want to program. Press the "OK" key.
A screen like Illustration 11 appears.
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Illustration 11 g02276397 - Select "PROG KW RELAY TRIP #N TRIP ACTIVATION DELAY TIME". Press the "OK" key to edit the current "PROGRAMMABLE TRIP POINT FUNCTION #N TRIP ACTIVATION DELAY TIME".
A screen like Illustration 12 appears.
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Illustration 12 g02276395 - Select the "PROG KW RELAY TRIP #N TRIP ACTIVATION DELAY TIME" to program. Press the "OK" key.
A screen like Illustration 13 appears.
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Illustration 13 g02276396 - Select "PROG KW RELAY TRIP #N TRIP DEACTIVATION DELAY TIME". Press the "OK" key to edit the current "PROG KW RELAY TRIP #N TRIP DEACTIVATION DELAY TIME".
A screen like Illustration 14 appears.
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Illustration 14 g02276413 - Select the "PROG kW RELAY TRIP #N TRIP DEACTIVATION DELAY TIME" to program. Press the "OK" key.
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| Illustration 1 | g02276314 |
Configuring the Programmable kW Relays using the Cat ET
- Connect Cat ET to the EMCP 4.
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Illustration 15 g02276574 - Select "kW Relay Setpoints" on the left.
Refer to Illustration 16.
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Illustration 16 g02276575 - Double-click the "Programmable Trip Point #N Trigger Condition" set point to change this value from the drop-down menu. Click the "OK" button to program.
Refer to Illustration 17.
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Illustration 17 g02276576 - Double-click the "Programmable Trip Point #N Percentage Threshold" set point to change this value. Click the "OK" button to program.
Refer to Illustration 18.
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Illustration 18 g02276577 - Double-click the "Programmable Trip Point #N Hysteresis Percentage" set point to change this value. Click the "OK" button to program.
Refer to Illustration 19.
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Illustration 19 g02276578 - Double-click the "Programmable Trip Point #N Output #1 Trip Activation Delay Time" set point to change this value from the drop-down menu. Click the "OK" button to program.
Refer to Illustration 20.
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Illustration 20 g02276579 - Double-click the "Programmable Trip Point #N Output #12 Trip Deactivation Delay Time" set point to change this value from the drop-down menu. Click the "OK" button to program.
- Repeat the above steps to program an additional timer.
