Omron K8AC-H Series Manual page 13

Nomenclature
Nomenclature and Operations
K8AC-H2@@@-FLK
Up key
Down key
Alarm Indicator
Order 7-segment
of Alarm display
priority characters
1 Heater burnout 1
hbt1
2 Heater burnout 2
hbt2
3 SSR open circuit
ssro
4 SSR short circuit
ssrs
Heater layer
5
hrs1
short circuit 1
Heater layer
6
hrs2
short circuit 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 Adjust or Set Mode while an alarm
is in effect, the alarm output is reset and the ALM and SSR
indicators turn OFF.
4. If an SSR operation gate current level is set for a model with
phase control or cycle control, alarms will not be output for
SSR short circuits.
Operation indicators
Main display area
Shift key
Mode key
Level key
s
LED
Alarm contents
indicator
ALM CT1 heater
indicator lit burnout detected.
ALM CT2 heater
indicator lit burnout detected.
SSR open circuit
detected (when
heater current
SSR cannot be
indicator lit detected with
temperature
control gate
output ON).
SSR short circuit
detected (when
heater current is
SSR
detected with
indicator lit
temperature
control gate
output OFF).
ALM CT1 overcurrent
indicator lit detected.
ALM CT2 overcurrent
indicator lit detected.
Name
Displays processing values, parameter characters,
Main display
and set values.
RUN (Mea- Lights when the power is turned ON and the
surement measurement operation is in progress.
operation) OFF at all other times.
Lights while in Adjust Mode.
ADJ
Flashes while in Test Mode.
(Adjust)
OFF at all other times.
Lights while in Set Mode.
SET (Set)
OFF at all other times.
Oper-
Lights or turns OFF according to gate input status.
ation
Gate pulse:
indi-
GATE Lights for high voltage pulse; OFF for low
cators
(Gate) voltage pulse.
Gate signal (4 to 20 mA):
Lights for 4 mA or over; OFF for less than 4 mA.
SSR Lights when an SSR error occurs (open or short
(SSR error) circuit).
*
OFF when SSR is normal.
ALM Lights for heater burnout or overcurrent.
(Alarm) *
OFF at all other times.
Increments a set value when the set value is in
Up key
change status.
Decrements a set value when the set value is in
Down key
change status.
Used to check set values while parameters are
displayed, and to put set values in change status.
Shift key
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.
* 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
0100 to
Heater 1 2300
ct 1
*1
current
*2
0100 to
Heater 2 2300
ct 2
*1
current
*2
*1. The decimal point position depends on the input type.
K8AC-H21@@: 0.100 to 2.300
K8AC-H22@@: 1.00 to 23.00
K8AC-H23@@: 10.0 to 210.0
*2. If the display is below 0100, the bar display "----" will be shown.
K8AC-H
Operation
Unit Function
This is the CT1 heater
current processing value.
Alarm operations such as
A
the heater burnout alarm
are determined based on
this processing value.
This is the CT2 heater
current processing value.
Alarm operations such as
A
the heater burnout alarm
are determined based on
this processing value.
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