Vacon Plc
Phone: +358-201 2121
Fax:+358-201 212 205
Service: +358-40-8371 150
E-mail: [email protected]
E-mail: [email protected]
Vacon
Page 65
Pump control with autochange
Figure 7-7
Principal control diagram of 3-pump autochange system
Figure 7-6
Example of 3-pump autochange system, main diagram
PE
L1
L2
L3
U
V W
PE
U
V W
PE
M1
M2
F1
F2
F3
VACON
U
V W
L1 L2 L3
Q1
K1
K2
K1.1
K2.1
M
M
3
3
U
V W
PE
M2
F2
K3
K3.1
M
3
ac3maint.ds4
223
224
206
209
A
O
V
A
O
V
225
226
230 VAC
S1
K1
K1.1
K1.1
K2
K2
K1
VACON I/O-expander
K1
K2
K2
K2.1
M1/Vacon
M2/
Vacon
M2/mains
M1/mains
24 VDC
S2
K3
K3
K2.1
K1
K3
210
K3
227
228
A
O
V
S3
K3
K3.1
K3.1
K2
K2
K3
M3/Vacon
M3/mains
K3
K1
212
ac3contt.ds4