Alarm Indicators - Omron K8AC-H Manual

Nomenclature
■ Nomenclature and Operations
Up key
Down key

Alarm Indicators

Order of Alarm 7-segment
priority display
characters
hbt1
1 Heater burnout 1
hbt2
2 Heater burnout 2
3 SSR open circuit ssro
ssrs
4 SSR short circuit
hrs1
5 Heater layer short
1
hrs2
6 Heater layer short
2
Note: 1. As soon as the cause of an alarm is removed, the alarm is
reset automatically.
2. If multiple alarms occur simultaneously, the one with the
highest priority is displayed.
3. If the mode is changed to ADJ or SET mode while an alarm
is in effect, the alarm output is reset and the ALM and SSR
indicators turn OFF.
Operation indicators
Main display area
Shift key
Mode key
Level key
LED Alarm contents
indicator
ALM CT1 heater
indicator lit burnout detected.
ALM CT2 heater
indicator lit burnout detected.
SSR SSR open circuit
indicator lit detected (when
heater current
cannot be
detected with
temperature
control gate output
ON).
SSR SSR short circuit
indicator lit detected (when
heater current is
detected with
temperature
control gate output
OFF).
ALM CT1 overcurrent
indicator lit detected.
ALM CT2 overcurrent
indicator lit detected.
Name
Main display Displays processing values, parameter characters,
and set values.
Oper- RUN (Mea- Lights when the power is turned ON and the
ation surement measurement operation is in progress.
indi- operation) OFF at all other times.
cators
ADJ Lights while in adjust mode.
(Adjust) Flashes while in test mode.
OFF at all other times.
SET (Set) Lights while in set mode.
OFF at all other times.
GATE Lights or turns OFF according to gate input status.
(Gate) Gate pulse: Lights for high voltage pulse; OFF for
Gate linear: Lights for 4 mA or over; OFF for less
SSR Lights when an SSR error occurs (open or short
(SSR error) circuit).
(See note.) OFF when SSR is normal.
ALM Lights for heater burnout or overcurrent.
(Alarm) OFF at all other times.
(See note.)
Up key Increments a set value when the set value is in
change status.
Down key Decrements a set value when the set value is in
change status.
Shift key Used to check set values while parameters are
displayed, and to put set values in change status.
Used to shift the set value digit when the set value is
in change status.
Mode key Used to switch the displayed parameter.
Level key Used to change the level.
Note: Check the specific status using the alarm display parameters
on the main display.
Processing Value Display Ranges and
Functions
Processing Display Display
value name characters range
ct 1
Heater 1 0100 to 2300
current (See notes 1
and 2.)
ct 2
Heater 2 0100 to 2300
current (See notes 1
and 2.)
Note: 1. The decimal point position depends on the input type.
K8AC-H@1@@: 0.100 to 2.300
K8AC-H@2@@: 1.00 to 23.00
K8AC-H@3@@: 10.0 to 230.0
2. If the display is below 0100, the bar display "----" will be
shown.
K8AC-H
Operation
low voltage pulse.
than 4 mA.
Unit Function
A This is the CT1 heater
current processing value.
Alarm operations such as
the heater burnout alarm
are determined based on
this processing value.
A This is the CT2 heater
current processing value.
Alarm operations such as
the heater burnout alarm
are determined based on
this processing value.
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