Siemens SED2 VFD Electronic Bypass Option 125-3208 - Manual (Page 21)

Installation Instructions
Siemens Building Technologies, Inc. 13
GND
GND
LUG
M1
(5) (6)
(T1)
OL1
1T1
1T2
(T2)
(T3)
1T3
M
(1) (2)
M2
(1) (2) A2
B2
U
V
(3)
(5) (6)
(4)
C2
W
(3) (4)
2L1
2L2
A1
B1
U1
V1
U
VFD
L1
C1
W1
W L3
GND
L2 V
R
S
B2
A2
2L3
A1
B1
3L1
3L2
T
C2 C1
3L3
FU1
1L1
1L2
(L1)
L1
L2
(T1)
DISC1
M3
(2)
(4)
(6)
1L3
(L3)
L3
(T3)
GND
(L2) (T2)
1L1 1L2
(5)
(3)
(1)
OPTIONAL SUPPLEMENTARY
POWER FUSES - MAIN SHORT
CIRCUIT PROTECTION BY OTHERS
(SEE NOTE 1)
OPTIONAL
DRIVE INPUT
CONTACTOR
OPTIONAL
INPUT LINE
REACTOR
OPTIONAL
OUTPUT LOAD
REACTOR
AC MOTOR
(CUSTOMER
SUPPLIED)
GND
LUG
POWER
SUPPLY
3 PHASE
60 Hz
TO
STEP-DOWN
CONTROL
TRANSFORMER VFD0160R1
NOTES:
1. Branch circuit protection to be provided by installer, per UL508A, if not provided with drive.
2. For bypass operation, modify these drive parameters: P0702[0] and P0702[1] = 3,
P0748 = Digital Out 1 Reverse ( ).
3. Control and communication wiring should be 300V UL minimum.
4. Communication wiring should be run with maximum separation possible from all other
wiring.
5. Essential service mode operates the motor full speed (bypass) with no protection for the
motor or system.
6. Ensure that automatic bypass will not damage the system before activating.
7. See Table 8 for proper fuse and wire sizes.
8. See Siemens Publication No. 125-3201 for SED2 input/output control signal wiring details.
Figure 9. E-Bypass Power Circuit.