LEROY-SOMER
Variable speed motors and geared motors
4.2 - Standard configuration: regulation with integrated PI loop (VMA A20)
PI reference using local control knob or external reference - 2 running directions (VMA A20 only).
Note: PI regulation is also accessible in configurations 5 and 6 (VMA A20 only).
Mains
power supply
Remote control
power supply
Marking
Functions - Characteristics
Connection of protected mains supply phases
L1, L2 or 200V to 240V ± 10% 50-60Hz in single-phase
L1, L2, L3 220V to 480V ± 10%, 50-60Hz in three-phase
PE
Earth connection
Connection of the braking resistor (optional)
R1, R2
VMA21 - min. resistance value = 200 Ohms
VMA22 - min. resistance value = 200 Ohms
Locking logic input
1
Terminals 1 and 3 not connected: drive disabled
Terminals 1 and 3 connected: drive enabled
2
0-10V or 4-20mA sensor feedback analogue input
Source +24VDC, 30mA (Sensor power supply)
3
Common at terminal 10
4
Source +10V, 10mA
5
0 V
Reference input 0 to +10V or 4-20mA
6
0-10V: input impedance = 100kOhms
4-20mA: input impedance = 0.5kOhms
7
Reverse/Stop logic input
8
Forward/Stop logic input
Ramp selection logic input
9
1s (for 0 to 50Hz): terminals 9 and 10 not connected
3s (for 0 to 50Hz): terminals 9 and 10 connected
Source +24VDC, 30mA
10
Common at terminal 3
Fault relay - volt-free contact 250V 1A
11, 12
Contact open: switched off or faulty
Contact closed: running
PARAMETER SETTING MANUAL
VARMECA 20
WIRING DIAGRAMS
KM1
QS
AU
Braking
R1
resistor
SB1
(Optional)
R2
SB2
KM1
KM1
QS : Fused isolator
AU : Emergency stop
SB1 : Off button
SB2 : On button
VARMECA 20
1
L1
2
L2
3
+24V
L3
4
+10V
5
0V
PE
6
7
8
9
10
+24V
11
Fault relay
12
Associated parameter setting
CDC-VMA 20
P20 = INPUT PI
P21 = PI - K PROPOR.
P22 = PI - K INTEGR.
Feedback
0 -10V
4 -20mA
Reference
0 -10V
4 -20mA
3532 - 05.2004 / f
PI feedback
Control
potentiometer
Run reverse
Run forward
Ramp selection
PEGASE VMA 20
Terminal No. 2 assignment = PI INPUT
PI = K PROPOR.
PI = K INTEGR.
Mini Dip K2
ON
OFF
Mini Dip K1
ON
OFF
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