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DANGER

THE BYPASS DISCONNECTTHE BYPASS DISCONNECT

THE BYPASS DISCONNECT

SWITCH DOES NOT DISCONNECTSWITCH DOES NOT DISCONNECT

SWITCH DOES NOT DISCONNECT

POWER FROM THE MOTOR ORPOWER FROM THE MOTOR OR

POWER FROM THE MOTOR OR

THE DRIVE CIRCUITS. DO NOTTHE DRIVE CIRCUITS. DO NOT

THE DRIVE CIRCUITS. DO NOT

SERVICE THE DRIVE UNLESSSERVICE THE DRIVE UNLESS

SERVICE THE DRIVE UNLESS

POWER IS DISCONNECTED FROMPOWER IS DISCONNECTED FROM

POWER IS DISCONNECTED FROM

THE DRIVE BY MEANS OF THETHE DRIVE BY MEANS OF THE

THE DRIVE BY MEANS OF THE

DRIVE INPUT DISCONNECTDRIVE INPUT DISCONNECT

DRIVE INPUT DISCONNECT

SWITCH, THE INPUT POWER DIS-SWITCH, THE INPUT POWER DIS-

SWITCH, THE INPUT POWER DIS-

CONNECT SWITCH, OR THE CUS-CONNECT SWITCH, OR THE CUS-

CONNECT SWITCH, OR THE CUS-

TOMER-SUPPLIED DISCONNECTTOMER-SUPPLIED DISCONNECT

TOMER-SUPPLIED DISCONNECT

SWITCH FEEDING THE DRIVE EN-SWITCH FEEDING THE DRIVE EN-

SWITCH FEEDING THE DRIVE EN-

CLOSURE.CLOSURE.

CLOSURE.

3.2.33.2.3

3.2.3

MAIN DISCONNECTMAIN DISCONNECT

MAIN DISCONNECT

SWITCH SWITCH

SWITCH (optional)

This rotary switch is used to disconnect input

power from both the drive and the bypass cir-

cuits. It may be supplied with or without fusing.

If supplied with fusing, this FUSED MAIN

DISCONNECT SWITCH provides motor fusing

when the motor is run in bypass.

3.2.43.2.4

3.2.4

DRIVE/OFF/LINEDRIVE/OFF/LINE

DRIVE/OFF/LINE

TRANSFER SWITCH TRANSFER SWITCH

TRANSFER SWITCH (op-

tional)

The DRIVE/OFF/LINE switch is a rotary

switch used as a motor transfer switch and a

motor disconnect switch. The motor is trans-

ferred between the output of the drive (normal

operation) and the output of a customer sup-

plied motor starter (bypass mode) using this

switch. For dual motor applications, two

DRIVE/OFF/LINE switches are used. If either

switch is in the OFF position, the drive will not

run.

DRIVEDRIVE

DRIVE - The motor is connected to the output

of the drive and isolated from the customer’s

motor starter. Motor operation is controlled by

the variable voltage and frequency from the

drive.

OFFOFF

OFF - The motor is isolated from both power

sources (drive and customer motor starter). The

switch is being used as a motor disconnect

switch.

LINELINE

LINE - The motor is connected to the output of

the customer provided motor starter and iso-

lated from the output of the drive. Motor opera-

VOLTS

AMPS

RPM

AUX

If the optional displays are not installed, the

meter sequence will pause at that display mo-

mentarily and then cycle to the next display.

Standard meter functions displayed are %

SPEED, % LOAD and VOLTS (output voltage).

3.2 OPTION SWITCHES3.2 OPTION SWITCHES

3.2 OPTION SWITCHES

The option switches are used when optional features

such as the bypass or drive input disconnect switch

options are supplied.

3.2.13.2.1

3.2.1

DRIVE INPUT DISCONNECTDRIVE INPUT DISCONNECT

DRIVE INPUT DISCONNECT

SWITCH SWITCH

SWITCH (optional)

This rotary switch is used to disconnect incom-

ing utility power to the drive.

DANGER

THE DRIVE DISCONNECT SWITCHTHE DRIVE DISCONNECT SWITCH

THE DRIVE DISCONNECT SWITCH

DOES NOT DISABLE POWER TODOES NOT DISABLE POWER TO

DOES NOT DISABLE POWER TO

THE BYPASS CIRCUITRY IN-THE BYPASS CIRCUITRY IN-

THE BYPASS CIRCUITRY IN-

STALLED INSIDE THE DRIVESTALLED INSIDE THE DRIVE

STALLED INSIDE THE DRIVE

WHEN IT IS IN THE OFF POSI-WHEN IT IS IN THE OFF POSI-

WHEN IT IS IN THE OFF POSI-

TION.TION.

TION.

DANGER

THE DRIVE DISCONNECT SWITCHTHE DRIVE DISCONNECT SWITCH

THE DRIVE DISCONNECT SWITCH

DOES NOT REMOVE POWER TODOES NOT REMOVE POWER TO

DOES NOT REMOVE POWER TO

THE MOTOR OR THE BYPASS CIR-THE MOTOR OR THE BYPASS CIR-

THE MOTOR OR THE BYPASS CIR-

CUITS IF THE BYPASS PROVIDEDCUITS IF THE BYPASS PROVIDED

CUITS IF THE BYPASS PROVIDED

IS A DRIVE/OFF/LINE TRANSFERIS A DRIVE/OFF/LINE TRANSFER

IS A DRIVE/OFF/LINE TRANSFER

SWITCH USING A CUSTOMERSWITCH USING A CUSTOMER

SWITCH USING A CUSTOMER

PROVIDED MOTOR STARTER.PROVIDED MOTOR STARTER.

PROVIDED MOTOR STARTER.

3.2.23.2.2

3.2.2

BYPASS DISCONNECTBYPASS DISCONNECT

BYPASS DISCONNECT

SWITCH SWITCH

SWITCH (optional)

This rotary switch is used to disconnect input

power from the bypass motor starter.

Brand	Graham
Model	1703 Series
Category	DC Drives
Language	English

Graham 1703 Series User Manual

Table of Contents

Questions and Answers:

Graham 1703 Series Specifications