K8AC-H
18
Parameter Defaults and Descriptions
Item
Mode
Parameter name
Description
Param-
eter
Setting range
Default
Protec-
tion
Mode
Setting Change Protection
Restricts access to Adjust Mode or Set Mode from Run Mode.
0: Access enabled to both Adjust Mode and Set Mode.
1: Access enabled to Adjust Mode and disabled to Set Mode.
2: Access disabled to both Adjust Mode and Set Mode.
aspt
0 to 2
0
Setting Value Change
Prohibition
Prohibits changes to set values.
wtpt
ON/OFF
OFF
Adjust
Mode
Burnout Alarm
Value 1
K8AC-H
@
1 Sets the output operation value for the burnout alarm.
The burnout alarm function can be disabled by setting the set value to
“
−
”.
al-1
0.200 to 2.200 A
1.000 A
K8AC-H
@
2
2.00 to 22.00 A
10.00 A
K8AC-H
@
3
20.0 to 200.0 A
100.0 A
Burnout Alarm
Value 2
K8AC-H
@
1 Sets the output operation value for the burnout alarm.
The burnout alarm function can be disabled by setting the set value to
“
−
”.
al-2
0.200 to 2.200 A
1.000 A
K8AC-H
@
2
2.00 to 22.00 A
10.00A
K8AC-H
@
3
20.0 to 200.0 A
100.0 A
Voltage Fluctuation
Compensation Standard Value
Sets the standard voltage used by the voltage fluctuation
compensation function. The fluctuation compensation function
operates in respect to this set value.
vfcv
100 to 240 VAC
100 V
Set Mode
All Initialization
Returns all set values and measurement values to their default
settings.
init
ON/OFF
OFF
Set Value Initialization
Returns all set values to their default settings.
sini
ON/OFF
OFF
Processing Value Initialization
Returns all measurement values to their default settings.
pini
ON/OFF
OFF
Alarm Hysteresis 1
Sets hysteresis for the alarm output value for burnout detection
(undercurrent) and heater layer short circuits (overcurrent) for CT1.
hys1
1 to 999
10
Alarm Hysteresis 2
Sets hysteresis for the alarm output value for burnout detection
(undercurrent) and heater layer short circuits (overcurrent) for CT2.
hys2
1 to 999
10
Gate Input Function
Turns the gate input function ON and OFF. If the gate input is turned
OFF, application as a simple ammeter is possible.
gate
ON/OFF
ON
Voltage Fluctuation
Compensation Reference Value Turns the voltage fluctuation compensation function ON and OFF.
comp
ON/OFF
OFF
Startup Lock Time
Sets the lock time for the startup lock.
stim
0 (OFF) to 255 s
0 (OFF)
Output ON-Delay
Sets the output delay time. Set this parameter to set the operating time.
odly
0.0 (OFF) to 99.9 s
0.0 (OFF)
Soft Startup Time
Sets the soft startup time. Set this parameter only when using a soft
start function with the power regulator.
soft
0.0 (OFF) to 99.9 s
0.0 (OFF)
SSR Short Circuit Detection
Turns the SSR short circuit detection function ON and OFF.
ssht
ON/OFF
OFF
SSR Open Circuit Detection
Turns the SSR open circuit detection function ON and OFF.
sopn
ON/OFF
OFF
Heater Layer Short Circuit
Detection (Overcurrent
Detection)
Turns the heater layer short circuit (overcurrent) detection function ON
and OFF.
hrst
ON/OFF
OFF
Heater Layer Short
Circuit Alarm Level
(Overcurrent Alarm
Set Value)
K8AC-H
@
1 Sets the operating level for heater layer short circuit (overcurrent)
alarms.
The heater layer short circuit alarm level is the same for both CT1 and
CT2.
hral
0.200 to 2.200 A
2.000 A
K8AC-H
@
2
2.00 to 22.00 A
20.00 A
K8AC-H
@
3
20.0 to 200.0 A
200.0 A
Heater Control Method
*
1
Sets the control method of the cyclic/phase control heater.
msmd
PH1, PH3, CYCL
PH1
Switchable Display
Sets the CT for which to normally display the current.
dsel
CT1, CT2
CT1
Power Save Mode
Turns entering the power save mode ON and OFF.
psmd
ON/OFF
OFF
Power Save Mode Standby Time Sets the time to enter power save mode.
pstm
10 to 300 s
60 s
Display Mode
Sets a 7-segment (NORM). full-span comparison (CMP), or bar (BAR)
display.
dsmd
NORM, CMP, BAR
NORM
Display Refresh Time
Sets the refresh time for the display.
dsrf
0.2 s, 0.5 s, 1.0 s, FAST 0.5 s
Unit Number
Sets the unit number for RS-485 communications.
u no
0 to 64
0
Baud Rate
Sets the baud rate for RS-485 communications.
dps
1200, 2400, 4800, 9600,
19200
9600
Data Length
Sets the data length for RS-485 communications.
len
7, 8
7
Stop Bits
Sets the number of stop bits for RS-485 communications.
sbit
1, 2
2
Parity Bit
Sets the parity for RS-485 communications.
prty
EVEN, ODD, NONE
EVEN
Gate OFF output hold time
*
2
Sets the time from when the gate signal goes OFF until the burnout
alarm output turns OFF.
goht
0 to 999 s
2 s
Number of CT passes 1
Sets the number of times the conductor for CT1 is passed through the
current transformer.
nct1
1 to 99 times
1 time
CT Ratio 1
Sets the CT ratio for CT1.
ctr1
1 to 999
1
Setting 1 for number of effective
digits to be displayed after the
decimal point
Sets the number of effective digits to be displayed after the decimal
point for the CT1 current display.
ndp1
0 to 3 places
Depends
on the
model.
Number of CT passes 2
Sets the number of times the conductor for CT2 is passed through the
current transformer.
nct2
1 to 99 times
1 time
CT Ratio 2
Sets the CT ratio for CT2.
ctr2
1 to 999
1
Setting 2 for number of effective
digits to be displayed after the
decimal point.
Sets the number of effective digits to be displayed after the decimal
point for the CT2 current display.
ndp2
0 to 3 places
Depends
on the
model.
Note:
Shaded parameters must always be set regardless of the
measurement method.
