LEROY-SOMER
4.8 - Configuration 5: Regulation of a pressure with the integrated PI loop - PI
reference using local or external reference - 2 running directions (VMA A20 only)
Mains
power supply
Remote control
power supply
SB1
SB2
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
Analogue input = pressure sensor feedback
2
0-10V or 4-20mA
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
Selection of preset analogue reference or digital
9
reference logic input
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
76
PARAMETER SETTING MANUAL
VARMECA 20
Variable speed motors and geared motors
WIRING DIAGRAMS
KM1
QS
AU
Braking
resistor
(Optional)
KM1
KM1
QS : Fused isolator
AU : Emergency stop
SB1 : Off button
SB2 : On button
VARMECA 20
Enable
1
L1
PI input
2
L2
3
+24V
L3
4
+10V
5
0V
PE
6
7
R1
SA3
8
SA4
R2
9
S1
10
+24V
11
Fault relay
12
Associated parameter setting (other indications Page 34)
CDC-VMA 20
P14 = Config. 5
P21 = PI - K PROPOR.
P22 = PI - K INTEGR.
P50 = T1 - P min
P51 = P - min
P52 = T2-F - min
P54 = PI DECAL
P55 = REF.PI
P56 = INPUT PI
P57 = ALARM
P58 = VP5
P59 = BAR FACTOR
Sensor feedback
Analogue reference
Reference selection
For other parameter settings see sections 2 and 3.
3532 - 05.2004 / f
Pressure
sensor
0/10V or
4-20mA
RP1
PI ref
Stop/Reverse
Stop/Forward
Selection of preset
pressure VP5 or
analogue reference
PEGASE VMA 20
Terminal block configuration = Config. 5
PI = K PROPOR.
PI = K INTEGR.
T1 pump draining
P1 pump draining
T2 pump stop on Fmin
Instability
Sensor reference
Sensor feedback
Alarm
VP5
K
Mini Dip K2
0 -10V
ON
4 -20mA
OFF
K1
0 -10V
ON
4 -20mA
OFF
Analogue
ON
Digital VP5
OFF
S1