R&M Materials Handling ELECTRIC CHAIN HOISTS LoadMate Chain Hoist LM 10 Stepless User Manual
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LM10 STEPLESS I&M MANUAL/EN/11.30.2010
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Copyright © (2010) R&M Materials Handling, Inc. All rights reserved.
G1.2.5 U/f Settings, see Note 1
Code
Name
Min
Max
Unit
Description
P1.2.5.1 Zero Frequency
Voltage
0.00
40.00
%
Output voltage at zero frequency, % of motor nominal voltage.
P1.2.5.2 U/f Middle point
Voltage
0.00
100.00
%
Voltage in the selected middle point frequency, % of motor nominal voltage.
P1.2.5.3 U/f Middle point
Frequency
0.00
120.00
Hz
Middle point frequency.
P1.2.5.4 Torque Boost
0
1
Torque maximization
0 = Off
1 = On
Torque boost is adjustable with parameters P1.2.5.5 “IrAdd Motor” and
P1.2.5.6 “IrAdd Generator” when “Free Travel” or “Free Hoist” is selected with
parameter P1.2.2 “Motor Selection”
P1.2.5.5 IrAdd Motor
0
100
With small speeds and heavy load the drive may not have enough voltage to
produce sufficient torque. Raising the value of parameter increases the voltage.
Default value is 30% in traveling and 100% in hoisting.
P1.2.5.6 IrAdd Generator
0
100
If motor voltage at generator area is too high, reducing value of parameter
decreases the voltage. Default value is 50% in traveling and 0% in hoisting.
P1.2.5.7 Rs Voltage Drop
0
512
Relative value of motor stator impedance voltage drop. Value of this parameter
is calculated by formula given below.
Motor Nom Flux current x Measured motor resistance (phase to phase) x 2217
Motor nominal voltage
G1.2.6 Brake Control, see Note 2
Code
Name
Min
Max
Unit
Description
P1.2.6.1 Start Current
0
200
%
To adjust DC-current during starting. See P1.2.4.2
Traveling with compact brake motors 130%, otherwise 80%.
Hoisting 100%.
P1.2.6.2 Brake Opening
Delay
0.00
10.00
s
Defines the opening delay of mechanical brake. “Start Freq S1” or “Start Freq
S2” is commanded during “Brk Opening Del”. After delay, output frequency
increases according to the acceleration parameters.
Default 0.05s
P1.2.6.3 Start DC-Time
0.00
5.00
s
Defines duration of the “Start Current”
P1.2.6.4 Stop DC-Time
0.00
5.00
s
Defines the function and the duration of the DC-braking time when stopping the
motor. If “Stop DC-Time” = 0 the DC-braking is not used.
P1.2.6.5 Stop DC-Frequency 0.00
250.00
Hz
Defines the DC-braking starting frequency
P1.2.6.6 Start Frequency S1
0.0
100.0
%
Defines the output frequency during brake opening delay in the S1 direction.
P1.2.6.7 Start Frequency S2
0.0
100.0
%
Defines the output frequency during brake opening delay in the S2 direction.
P1.2.6.8 Brake Stop
Frequency
0.00
Max
Freq
Hz
Defines the output frequency when the relay output ROD1 for brake control
opens during stopping
P1.2.6.9 Minimum Frequency
Bias S2
0.00
Min Freq Hz
Helps to define the Minimum frequency in down direction for hoisting. Minimum
frequency in down direction is “Min Frequency” - “Minimum Frequency Bias
S2”.