User`s guide

Bulletin No. VVDED397053US Section 3 — Controlling and Monitoring the ATV58 Drive Controller

November 2000 Hand/Off/Auto (HOA)

CONTROL MODES

Hand/Off/Auto (HOA) Switch Functionality

When the control switch is in the auto position,

all local run and start

commands to the drive controller must be removed.

During power-up,

the ATV58 drive controller defaults to local control. (See “Local and

Remote Control” on page 30.) After the drive controller recovers from a

power up sequence (including such unplanned events as an AC line

power disturbance), it immediately responds to any local controls that are

active before the Interbus-S communication board has initialized and

assumed control.

This can result in unintended equipment operation.

When the control switch is in the hand or off position,

the drive controller

must be placed into the forced local mode .

While it is possible to stop

the drive controller in the remote mode by activating one of the local stop

commands (such as the keypad display stop button), commands sent

over the network can restart the drive controller if it is not in forced local

mode. See “Forced Local” on page 31.

LOSS OF CONTROL

The user must provide a Hand/Off/Auto switch with the following

functionality:

• In the Hand position, forced local mode must be enabled.

• In the Off position, all run terminal inputs must be disabled via

open circuit, and forced local mode must be enabled.

• In the Auto position, the run terminal inputs must be disabled via

open circuit, and forced local mode must be disabled.

Failure to follow these instructions can result in death or serious

injury.

WARNING

VVDED397053USBook Page 29 Tuesday, November 28, 2000 9:01 AM