Engineering Card; General; Led Indicators - Honeywell 5704 Operating Instructions Manual

MAN0448_Issue 13_2010
005704-M-5001 A03249
CHAPTER 3 CONTROlS AND FACIlITIES
3.

ENGINEERING CARD

3.1

General

The Engineering Card provides facilities to allow each control card
channel to be interrogated and to allow normal maintenance functions
such as calibration to be carried out. It also acts as a connecting point
for the engineering interface software which allows each card to be
configured.
3.2

lED Indicators

Two indicators at the top of the front panel of the
Engineering Card indicate the operational status of
the card:
3.2.1 - Green lED
A continuously illuminated LED indicates that the
correct dc power is connected to the rack via the
DC Input Card.
A flashing LED at approximately two second
intervals, indicates a low dc power input level.
A flashing LED at approximately 0.5 second intervals,
indicates a hardware fault.
3.2.2 - Red lED
Provides an indication of the operation of the
Engineering Card communications status as
follows:
Off: Engineering Card functioning correctly
and the engineering functions are locked.
Operators functions are operational to
allow the checking of various control card
channel settings.
On: Engineering Card functioning correctly
and the engineering functions are
unlocked enabling changes to be made
to the operation of a selected control card
channel.
3-17
5704 Control System
PRINT
BEAD mA ALARMS
ZERO SIGNAL
SPAN 1 ST SPAN
INHIBIT
CLOCK