Siemens 125-3208 operating instructions P0748 = Digital Out 1 Reverse

Installation Instructions

VFD0160R1

OPTIONAL SUPPLEMENTARY

POWER FUSES - MAIN SHORT

CIRCUIT PROTECTION BY OTHERS

DISC1

(SEE NOTE 1)

FU1

M1

L1

1L1

2L1

POWER

(T1)

(L1)

(5)

(6)

L2

1L2

2L2

SUPPLY

(3)

(4)

3 PHASE

(T2)

(L2)

60 Hz

L3

1L3

2L3

(T3)

(L3)

OPTIONAL

OPTIONAL

OPTIONAL

(1)

(2)

GND

DRIVE INPUT

INPUT LINE

VFD

OUTPUT LOAD

GND

GND

CONTACTOR

REACTOR

REACTOR

M3 3L1

M2

OL1 1T1

LUG

R

L1

U

U1

U

(2)

(1)

A1

A2

A1

A2

(1)

(2)

(T1)

AC MOTOR

3L2

S

V1

V

1T2

L2

V

M

(CUSTOMER

(4)

(3)

B1

B2

B1

B2

(3)

(4)

(T2)

SUPPLIED)

3L3

T

L3

W

W1

W

1T3

(6)

(5)

C1

C2

C1

C2

(5)

(6)

(T3)

GND

1L1

1L2

GND

LUG

TO

STEP-DOWN

CONTROL

TRANSFORMER

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. 125-3201for SED2 input/output control signal wiring details.

Figure 9. E-Bypass Power Circuit.

Siemens Building Technologies, Inc. 13