GE Industrial Solutions ASTAT XT - Manual (Page 37)

37 • Control Keypad
4.7.6 Slow Speed & Energy Save Parameters 37 – page 5
Function &
Default
Range Unit Description
Energy Saving
0 (MIN)
0(MIN.) –
10(MAX.) Sets the required energy saving level.
Activated when the motor has a light load for extended
periods of time. Supply voltage to the motor decreases
(lowering the rotating magnetic field intensity), thus reducing
the reactive current and copper/iron losses.
In order to activate this function:
Program PROG. Input #7 to Energy Saving (refer to
section
4.7.8 on page 40)
Connect control inputs voltage to input terminal 7
Note:
When using Energy Saving function, harmonics should be
taken into consideration. At maximum energy save settings,
the 5
th harmonic may exceed 30% of the RMS current value.
ATTENTION!
When using ASTAT-XT in the EU, compliance with EMC is
required.
ASTAT-XT range comply with the generic EN 50081-2 and EN
50082-2 only when not using the Energy Saving function.
Slow Speed TRQ.
8
1(MIN.) –
10(MAX.) Sets Slow Speed Torque.
Determines the torque while motor is operating at 1/6 of
nominal speed. Refer to section
4.7.8.1 on page 41.
Max Slow SP Time
30 SEC.
1-30sec. 38 Sets the maximum time for Slow Speed Torque operation.
Determines the maximum allowable operation time at slow
speed.
ASTAT-XT will trip when this time is exceeded and a Slow
Speed Time
message will display.
WARNING
Operating current while motor is running at 1/6 speed is
much higher than nominal current and motor ventilation is
much weaker. Special caution must be taken to prevent
overheating when running the motor at slow speed for long
periods of time.
Store Settings
Slow SP & Saving
Same as
Store Settings Main Settings
on page 28.
37 Displays in MINIMIZED MODE and MAXIMIZED MODE.
38 The range of the Max Slow SP Time can be extended to 1-60 by using the EXPANDED SETTING as described in section 5.5.5
page 50.