—————— TPD32-EV ——————
190
Flux weak speed
Speed value as a percentage of
Motor max speed
, when the Voltage control phase starts.
The
Flux weak speed
parameter, when the speed feedback control is enabled (Enable
fbk contr = Enabled), is used to underline the fact that during the Voltage control phase
the armature voltage and the feedback signal are not proportional. If the drive works
with a constant torque on the whole regulation range (
Flux reg mode
= Constant Cur
-
rent), it is necessary to insert the factory set 100% value.
Speed fbk error
Max. allowed error expressed as a percentage of the max. output voltage (
Max out
voltage
). By means of
Max out Voltage
,
Flux weak speed
and
Motor max speed
a
relation between motor speed and armature voltage is obtained. If a difference higher
than
Speed fbk error
occurs a
Speed fbk loss
failure occours.
Tacho scale
Fine scaling of the speed feedback using a tachometer analog generator (
Speed fbk sel
= Tacho). It is a multiplier of the read tach voltage.
For example:
Analog tach = 60V/1000 rpm, motor top running speed 3000 rpm.
Maximum tach volts = (60V/1000 rpm*3000rpm)= 180 VDC.
- Set dip-switch S4 for 181.6V (see table 4.4.3)
- Set the tacho scale parameter = 181.6V / 180V = 1.01
-
Fine adjust the value of Tacho scale if the 180 VDC tach voltage is not perfectly reached.
Speed offset
Offset scaling of the feedback circuit.
Encoder 1 pulses
Number of pulses per revolution of the sinusoidal encoder connected to the XE1 connector.
Encoder 2 pulses
Number of pulses per revolution of the digital encoder connected to the XE2 connector.
The Encoder 2 pulses and Motor max speed shall be inside the allowed area shown in
figure 6.11.5.2
Motor max speed [PAR 162]
Encoder 2 pulses [PAR 169]
a
e
r
A
d
e
w
o
ll
A
6000
0
3000
0
2000
1000
2000
4000
5000
1000
0
0
8
1
0
0
6
1
0
0
2
1
0
0
8
0
0
4
1400
600
200
Par 162 = 6000 rpm (max.)
Par 169 = 100 ppr (min.)
Par 162 = 1465 rpm
Par 169 = 100 ppr (min.)
Par 162 = 300 rpm
Par 169 = 500 ppr
Par 162 = 8 rpm
Par 169 = 977 ppr
Par 162 = 300 rpm
Par 169 = 976 ppr
100
500
1500
500
When Par 175
= 700V or greater,
Par 162 min.
= 500 rpm
Figure 6.11.5.2: Allowed area for Encoder 2 pulses and Motor max speed
Refresh enc 1
Enable the monitoring of the encoder 1(connector XE1) connection status, in order to
detect a speed feedback loss alarm.
When an alarm is detect, the keypad will shown „Speed fbk loss“.
Encoder 1 state
provides the indication of encoder 1 connection status. The parameter can be programmed
on a digital output. This function is activate setting
Enable fbk contr
= Enabled.
Summary of Contents for TPD32-EV-...-2B
Page 1: ... Instruction manual Industrial Application DC drives TPD32 EV ...
Page 372: ... TPD32 EV 372 9 BLOCK DIAGRAM 9 1 CONTROL BLOCK DIAGRAMS ...
Page 373: ... Instruction manual 373 ...
Page 374: ... TPD32 EV 374 ...
Page 375: ... Instruction manual 375 ...
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Page 377: ... Instruction manual 377 ...
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Page 501: ... Instruction manual 501 APPENDIX 3 ACCESSORIES A3 1 EAM Adapter Kit EAM1579 EAM1580 ...
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