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Emerson Mentor MP Advanced User's Manual page 80

High performance dc drive 25a to 7400a, 480v to 690v two or four quadrant operation
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Parameter
Menu 5
structure
5.59
Back emf set point
Bit
SP
Coding
0 to ARMATURE_VOLTAGE_MAX V DC
Range
For 480V Drive: Eur: 440, USA 500
Default
For 575V Drive: Eur: 630, USA 630
For 690V Drive: Eur: 760, USA 760
Update rate
Background read
Defined as the voltage at which base speed is reached.
This should be set to the value of the armature back emf at which field weakening is required to start.
5.61
Armature Resistance
Bit
SP
Coding
0 to 6.0000 Ohms
Range
0
Default
Second motor
Pr 21.10
parameter
Update rate
Background read
This is used to calculate the armature IR voltage drop that is used as a correction to the measured armature voltage, to allow the back emf to be
computed.
5.62
Spill over loop P gain
Bit
SP
Coding
0 to 300.00
Range
0.4
Default
Update rate
Background read
Spill over loop I gain
5.63
Bit
SP
Coding
0 to 300.00
Range
5
Default
Update rate
Background read
Enable economy timeout
5.65
Bit
SP
Coding
1
0 to 1
Range
Update rate
0 Eur 1 USA
Permits the field current to be configured to the field economy level (Pr 5.67) automatically after the drive has been disabled for a period of time (Pr
5.64). This is used to prevent the motor windings from overheating if the drive is stopped, and the motor ventilation is switched off. This can also be
used to prevent condensation in the motor when it is not in use.
5.67
Field economy level
Bit
SP
Coding
0 to 200.0%
Range
25%
Default
Update rate
Background read
Sets the reduced field current level used when the field economy function is used.
80
Keypad and
Parameter x.00
display
FI
DE
Txt VM DP
ND
1
FI
DE
Txt VM DP
ND
4
FI
DE
Txt VM DP
ND
2
FI
DE
Txt VM DP
ND
2
FI
DE
Txt VM DP
ND
FI
DE
Txt VM DP
ND
1
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Parameter description
Advanced parameter
format
RA
NC
NV
PT
US RW BU
1
1
RA
NC
NV
PT
US RW BU
1
1
RA
NC
NV
PT
US RW BU
1
1
RA
NC
NV
PT
US RW BU
1
1
RA
NC
NV
PT
US RW BU
1
1
RA
NC
NV
PT
US RW BU
1
1
Serial comms
descriptions
protocol
PS
1
PS
1
PS
1
PS
1
PS
PS
1
Mentor MP Advanced User Guide
Performance
Issue Number: 1
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