Flowserve KW941 User Manual download pdf (Page 16)

KW941 Pump Power Monitor USER INSTRUCTIONS ENGLISH 71569285 02-12

Page 16 of 24 flowserve.com

The High Power Trip Point setting is usually

determined by the lowest value of the above three

conditions, however, specific pumping applications

may benefit from lower setting. For additional

information, contact your Flowserve sales

representative or local distributor.

5.3.3.3 Setting the High Power Trip Delay

1) Press the High Power Trip Delay button. The

Trip Delay LED will illuminate indicating the

function is active. The current delay value in

seconds (0 to 999) will be displayed.

2) Press the ↕ SET buttons to display the desired

value.

3) Press the HP or KW button to turn off the

function's LED and return to normal operation

(or any other function button to activate that

function's adjustment feature).

The delay time value should be set to

accommodate normal process fluctuations (usually 2

seconds or less). Excessive delays allow the pump

to operate at high power conditions which may result

in damage to the pump or motor.

5.3.4 Resetting Alarms

Alarms, indicated by a blinking Low Power or High

Power Trip Point LED, can be reset by any of three

methods.

a) MANUAL: Press Trip Button with the flashing

LED.

b) REMOTE: Momentary contact closure between

Reset + and Reset - on TS1. See specifications

for contact requirements.

c) AUTOMATIC: In automatic reset mode, an alarm

condition will cause the selected alarm relay(s)

to remain in the tripped state for 10 seconds

before automatically resetting.

5.3.5 Activating Automatic Reset Mode

1) Press and hold the TRIP DELAY button until the

TRIP DELAY displayed value is flashing. This

indicates that the unit is now in automatic mode.

2) Press the HP or KW button to return to normal

operating mode.

5.3.6 De-activating Automatic Reset Mode

1) To return to manual alarm reset operation press

and hold the TRIP DELAY button until the TRIP

DELAY display value stops flashing.

2) Press the HP or KW button to return to normal

operating mode.

5.4 Demo Mode

Using the Demo Mode can be helpful in verifying

whether or not the alarm contacts are functional.

Varying the simulated input power in Demo Mode will

permit simulated alarm conditions causing the alarm

relay(s) to trip. This will enable verification of the

alarm contact wiring/wiring logic into the motor

start/stop circuit.

Changing time delays and setpoints, then

successfully causing alarm relays to trip while in

Demo Mode may indicate that a problem is due to

external causes such as wiring errors, misapplication,

or improper setup.

To enter the Demo Mode:

• press the "HP" button, and then the UP (↑)

setting arrow on the front panel consecutively.

The "HP" LED will blink indicating that the Demo

Mode is operational.

• Repeat this sequence to exit the Demo Mode.

• Use the UP (↑) and DOWN (↓) setting arrows to

change the readout to simulate a motor load.

The display will increase or decrease as the

arrow buttons are pressed. Moving the load

above the High Power Trip Point or below the

Low Power Trip Point will activate the alarm

contacts (after Trip Delay has expired).

• The Startup Delay may need to be extended to

move the simulated load between the Trip

Points.

5.5 Current Sensor Field Replacement

The current sensor (toroid) can be replaced in the

field if required, but it must be calibrated to the

KW941 using the following procedure.

With the current sensor connected to the KW941 and

power to the unit but the motor not running (no

current through the lead going thru the sensor):

1. Press and hold in the “KW” button until the

display changes, a number will be displayed.

2. Release the “KW” button and immediately

press and release the up arrow “SET” button.

3. The display will return to zero and the sensor

will be calibrated for that unit. Select the

desired display units. The unit is now ready

for normal operation.

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Flowserve KW941 User Manual Page 16

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