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4-5
Setting up & Commissioning
4.
Check that a speed demand signal is available. This will normally appear as an input to the
Setpoint Ramp on terminal T13 (diagnostic test point 11).
Additional setpoint inputs may also appear at:
Positive trim, terminal T10 (diagnostic 12)
Negative trim, terminal T17 (diagnostic 13)
Note: The sum of the setpoint voltages appears at terminal T12 (diagnostic 15) as the Total
Setpoint voltage.
5.
Check the polarity of the tachogenerator signal, if used, by rotating the motor shaft manually in
the "forward" direction (i.e., the direction which should correspond to a positive setpoint at T13):
The voltage at terminal T1 (or T3) should go positive.
If armature voltage feedback is being used the polarity of the feedback signal is inherently
correct. It is however important to ensure that the speed scaling has been set correctly even in
armature voltage feedback mode.
6.
Apply the 'RUN' signal to T5 and maintain.
The main supply contactor (L1 and L2) should close.
Remove the 'RUN' signal.
The main supply contactor should open. If not disconnect all power supplies and check the
run circuit and contactor wiring.
Note: The main contactor should NEVER be operated by any means other than the drive
internal contactor control circuit as shown in the basic wiring diagram.
W
A
R
N
I N
G
!
WARNING!
7.
Turn off all power supplies to the equipment and when the whole system is totally isolated
and safe, re-connect the Main L1 and L2 supply.
8.
Turn on Auxiliary single phase supply.
9.
Turn on Main L1 and L2 supply.
10.
Turn the Speed Setpoints to zero so that the Total Setpoint voltage is zero (terminal T12,
Diagnostic 15).
11.
Check that the Main Current Limit preset (P5) is turned to zero (fully anti-clockwise).
12.
Initiate "Drive Run" and immediately check that the correct field voltage appears between
terminals F+ and F-. Note that this will be high voltage dc, so proceed with extreme caution.
Do not continue if this is not correct, but switch off all supplies and check Field Voltage is
compatible with supply.
Check that the motor ventilation fan, if fitted, is rotating in the correct direction. Check the
direction visually as the fan starts since a centrifugal fan may produce considerable air flow
even when rotating in the wrong direction.
13.
Check that LED 4 PLL Lock is illuminated. Refer to the Diagnostic section for explanation
of the LED functions.
14.
Check that the Standstill Logic is switched OFF (SW1/7).
NOTE:-
a)
During the following stages (15 and 16) be ready to stop the drive immediately should
the motor overspeed.
This manual was downloaded on www.sdsdrives.com
+44 (0)117 938 1800 - info@sdsdrives.com
DO NOT PROCEED FURTHER UNLESS THE RUN CIRCUIT AND
CONTACTOR OPERATE CORRECTLY.
514C Product Manual
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