Bell & Gossett 176R0649C Technologic 502 Series Pump Controller - Manual (Page 22)

22
Figure 3-13.1. Customer W
iring Schematic Diagram, VFD with 2 or 3 Followers (1 of 2)
M1
1T1 1T2 1T3
PUMP MO
TO
R #1
60 Hz 3Ø POWER INPUT
L13 L1
1
L12
DISCONNECT L1 L2 L3
GND BAR
GND
(T1) (T2) (T3)
(L1) (L2) (L3)
W
L3
GND
V
L2 L1
U
MASTER
L13 L1
1
L12
MAIN
GND
GND
BLOCK
DISTRIBUTION
L13 L1
1
L12
GND BAR
GND
CUST
OMER
SUPPLIED BRANCH CIRCUIT
PROTECTION
208V
-600V
POWER
TO
SL
AV
E VFD'S
4
5
6
RELA
Y
2
1
2
3
RELA
Y
1
C
N
O
N
C
C
N
O
N
C
VA
RIABLE
FREQUENCY
DRIVE
RS485
DP3
DP4
DP2
DP1
VFD4-18
2J27
GENERAL ALARM
240V
AC, 2A MAX.
(+) (-)
CUST
OM FIELD
CONNECTION FOR
CONFIGURABLE
ANALOG OUTPUT
P
COM
N
DISCONNECT
ENCLOSURE
COMMON
PA
NEL
USB
TO
VFD4-27 2J28
VFD2-27 2K08
TO
VFD3-27 2J18
VFD4-27 2K28
VFD2-18 2K07
VFD3-18 2K17
VFD1-20
VFD1-5
1R21 VFD1-4
VFD1
20
33
32
19
27
29
18
13
12
2
3
4
7
6
9
10
1
MCB-101
AUX. CONNECT
OR
11
12
X30A
13
Din COM
Din
7
Din
8
Din
9
3 Dout
4 Dout
Out +24V
(2) GND
Ain
3
Ain
4
Out +24V
Out +24V
Di
n
Din
D I/O
D I/O
Di
n
Din
Din COM
Out +24V
61
68
69
50
42
39
53
54
55
CO
M
P
N
A Out COM
A
Ou
t
Out +10V
Ai
n
Ain
Ain COM
OP
T. LOW SUCTION
PRESSURE SWITCH
SYSTEM RUN
REMOTE
CUS
TO
MER
SUPPLIED (+24V)
RUN ST
AT
US
(+24V)
1 2
ON
1 2
ON
ON=0-20mA OFF=0-10V
S201
S202
DS1
FU1
(LOC
AT
ED ON VFD)
DISCONNECT V/S PUMP
R1 249W
R2 249W
2K08 VFD2-33
2L08 VFD2-20
1K18 VFD1-12
2B02
2C02
2C02
14 Out +24V
VFD3-27 2K18
FEEDBACK
Ain1
4-20mA
FEEDBACK
Ain2
4-20mA
FEEDBACK
Ain3
4-20mA
FEEDBACK
Ain4
4-20mA
(- )
(+)
(- )
(+)
(- )
(+)
(- )
(+)