User`s guide

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

November 2000 Forced Local

Local Control

In local (hand) control, the drive controller is controlled by either:

• Operators such as push buttons, switches, and a speed potentiometer

that are wired to the drive controller terminal block

• The keypad display buttons

See the latest revision of keypad display manual VVDED397047US for

more details on how to select between the two modes of local control.

Remote Control

In remote (auto) control:

• The drive controller is controlled by the serial communication network.

• The speed reference and the start/stop control cannot come from

separate sources.

Forced Local

Switching between local and remote control is achieved by a switch wired

to a logic input on the controller terminal block as illustrated in Figures 9

and 10 on page 30. The logic input must be assigned to the function,

forced local.

When the logic input assigned to forced local is active (high), all control

of the drive controller is assigned to the selected local (hand) control

mode. In this case, command requests by the network are refused.

Command parameters can be monitored. All other parameters can be

read/write accessed.

When the logic input is not active (low), all control of the drive is

transferred to the network if wired as shown in Figures 9 or 10. The only

local (hand) controls that are still monitored by the drive controller include

UNINTENDED EQUIPMENT ACTION

When in forced local mode, all commands from the communication

ports are ignored.

Failure to consider the implications of unanticipated operation

can result in death, serious injury, or equipment damage.

WARNING

VVDED397053USBook Page 31 Tuesday, November 28, 2000 9:01 AM