Midi-Maestro and Maxi Maestro Drive
26
RT resistor not fitted on daughter board
Calculate the correct value for the
RT resistor see
Setting up the Drive to adjust the components.
Speed reference signal on input pins 9 and 10
Reduce the speed reference signal to less than 1mV.
Motor turns in reverse direction
Speed reference signal pins 9 and 10 reversed
Reverse pins 9 and 10.
Motor connections pins reversed
Reverse pins 17 and 18.
Tachogenerator connection pins reversed
Reverse pins 11 and 12.
Tacho loss protection when
operating in armature feedback
Switch 3 set at ON
Set switch 3 at OFF.
Difficulty in adjusting
system dynamic response
Components on the daughter board have been
selected for a non-selected function
If the tachogenerator feedback mode has been selected,
the resistors
RAI and RKW must be disconnected.
RS resistor selected to improve STOP condition
When a
RS resistor is fitted, the dynamic response is
modified. If this resistor is not required, disconnect it.
Asymmetric torque generation
Drive is affected by signal noise
When output pins 6 and 7 (voltage reference outputs)
are connected with long cables, it may be necessary to
install 0.1µF capacitors as follows:
Between pin 6 and pin 8
Between pin 7 and pin 8
Part numbers
Model Choke Transformer
Midi-Maestro
DCD 140 × 8/16
L13
Part Number:
4371–1314
2.0kVA
Part Number:
3221–1449
3.5kVA
Part Number:
3221–1451
Midi-Maestro
DCD 140 × 14/28
L13
Part Number:
4371–1314
2.0kVA
Part Number:
3221–1449
3.5kVA
Part Number:
3221–1451
Maxi-Maestro
DCD 200 × 25/50
L14
Part Number:
4371–1403
6.0kVA
Part Number:
3221–1435
12.0kVA
Part Number:
3221–1454
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