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Starting the system, Caution – ITT S-DRIVE IM213 User Manual

Page 17

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17

Section 7

(continued)

Caution

Failure to properly set the Motor Overload Setting switches can result in loss of motor overload

protection and will void the motor warranty. Nuisance tripping or motor damage can occur if these

switches are not set properly.

Setting the Acceleration/Deceleration Switches

Switch 4 from bank 1 and switches 1 and 2 from bank 2 control the acceleration/deceleration ramp times. The

acceleration/deceleration switches (ACCEL/DECEL RAMP SETTINGS) control how fast the controller will change

the speed of the motor. The ramp setting is the time it takes the motor to change from minimum speed to

maximum speed. For example, if the ramp setting is set to 1 second and the minimum speed is set to 30Hz, the

motor will ramp up from 30Hz to 60Hz in 1 second. A faster ramp setting should be used in systems where the

flow rate can change quickly. This means that the motor can react faster to maintain the set pressure. A slower

ramp setting should be used in systems where the flow rate changes slowly or where fast changes in speed

can cause water hammer or pressure surges.

Setting the No Water Restart Time Switches

Switches 3 and 4 from bank 2 control the no water restart time. The no water (dry well) restart time switches

control the time between a no water (dry well) error and the restart of the system. For example, if the no water

restart time switches are set to 30 minutes, the system will restart 30 minutes after a no water (dry well) error

has been detected. For the 10 minute restart time, the controller will not restart if 5 faults are detected within 60

minutes. All other settings will continue to restart after the chosen restart time.

Note

Failure to properly set the motor overload switches can result in nuisance no water (dry well)

faults.

Setting the Minimum Frequency Switch

Switch 1 from bank 3 controls the minimum frequency. The minimum frequency switch controls the slowest

speed that the motor will run. For submersible pump/motor applications these switches must always be set to

30Hz minimum speed. For above ground applications with high suction pressure, the 15Hz setting can be used to

prevent pressure oscillation at low speeds. In some cases the suction pressure may be high enough that the pump

exceeds the pressure setting at 30Hz. In this case the 15Hz setting can be used.

Caution

Failure to properly set the minimum frequency switch can result in motor damage and will void the

motor warranty. The minimum frequency must be set to 30Hz for submersible applications.

Setting the Carrier Frequency Switch

Switch 2 from bank 3 controls the carrier frequency. For model numbers without the F suffix, the switch can be

used to change the output carrier frequency to avoid audible noise issues in above ground applications. For

model numbers with the F suffix, this switch is disabled and the carrier frequency is always set to 2 kHz.

Starting the System