TE2 Series Digital Solid State Soft Starter User Manual 75 | Page
Setup and Use
Pump systems vary greatly. To accommodate this, the Pump-Flex
Deceleration control feature is designed to provide complete flexibility in
how the deceleration process takes place by using the following
settings:
Deceleration begins when a Stop command is given (or the Run
command is removed). If there is a Bypass Contactor, it will open
immediately, putting the power control back to the SCRs.
Figure APP2.2: Pump-Flex Deceleration Graph
F024 = Deceleration Ramp
Factory Setting = 0 (Disabled)
Range = 0 - 2
When F024 = 0, the deceleration feature is disabled.
When F024 = 1, the deceleration feature is enabled AND the overload
protection feature (from F003 - F005) remains active. When a
Stop command is given, the starter begins to apply Deceleration
voltage. However, if an overload trip occurs, the starter ceases
applying Deceleration voltage and the motor coasts to a stop to
prevent additional motor heating and potential motor damage.
When F024 = 2, the deceleration feature is enabled and deceleration
will continue even when an overload condition trips. This is
to be used only when the risk of damage due to an uncontrolled
shutdown is considered worse than the potential damage to the
motor.
WARNING!
Setting F024 = 2, presents significant risk of over-heating
the motor beyond its design limits which could result in
motor damage and fire hazard. Do this only in
circumstances where the potential for mechanical damage
outweighs the risk of motor damage and fire.
Stop Command
(Bypass Contactor Opens)
F025: Begin Decel Level
(Immediate step down)
F026: Decel Shut Off
(VMX Output Off)
Voltage
Time
F027: Decel Ramp Time
Full Speed
Check Valve
Closes
= Motor Torque
= Pump Output
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