IM 77J04R31-01E 2nd Edition Oct. 15, 2019-00
5
Low-limit
alarm
setpoint
Power ON
PV
Time
Normal
Regarded
as normal
Abnormal
(Alarm ON)
If an alarm type code with
stand-by action is set, alarm
action is turned off during the
start-up control.
This function is useful at power
ON or when changing the alarm
type.
Stand-by Action
9.2 Setting Alarm Output-Related Parameters
This section describes an example of setting the alarm-1 action (AL1) to “12” (PV low-limit alarm, with
stand-by action), alarm-1 setpoint (A1) to “0” (°C), alarm-1 hysteresis 1 (HY1) to “5” (°C), alarm ON
delay (OND) to “5” (sec.) and alarm OFF delay (OFD) to “5” (sec.) with the range code No. (IN) set
to “62” (instrument input range: -199.9 to 200.0°C). (Parameters relating to alarm 2 to alarm 4 can be
set in the same way as the procedure below.)
Press or
to display "12."
To the Setup Parameter
Screen 1
When the SET/ENT key is pressed for more than 3 sec.
with the Operation Parameter Screen displayed, the Setup
Parameter Screen 1 appears with parameter "AL1"
displayed.
When the power is turned on, the PV screen of the
Operation Parameter Screen appears.
Press the UP or DOWN key to display "5.0" (°C) on the
DATA display.
Press the SET/ENT key to accept alarm-1 hysteresis "5.0"
(°C).
Press the SET/ENT key to display parameter "OND."
Press for more
than 3 sec.
Press .
This completes the process for
setting the alarm-1 hysteresis.
This completes the process for
setting the alarm-1 action.
This completes the process for
setting the alarm-1 setpoint.
The decimal point blinks during
data change.
Press the UP or DOWN key to display "5" (sec.) on the
DATA display.
Press the SET/ENT key to accept alarm ON delay "5"
(sec).
Press the SET/ENT key again to display parameter
"OFD."
The decimal point blinks during
data change.
The decimal point blinks during
data change.
The decimal point blinks during
data change.
Press the UP or DOWN key to display "5" (sec.) on the
DATA display.
Press the SET/ENT key to accept alarm OFF delay "5"
(sec).
Press the SET/ENT key for more than 3 sec.
This causes the Operation Parameter Screen to appear.
This completes the process for
setting the alarm OFF delay.
The decimal point blinks during
data change.
Press the UP or DOWN key to display "12" on the DATA
display.
Press the SET/ENT key to accept alarm-1 action "12."
Then to set the alarm setpoint, press the SET/ENT key for
more than 3 sec. to display the Operation Parameter
Screen. (To set the hysteresis parameter and successive
settings, press the SET/ENT key to display the next
parameter.)
Setup Parameter Screen 1
Setup Parameter Screen 1
Operation Parameter Screen
Press the SET/ENT key to display parameter "A1."
Press the UP or DOWN key to display a low-limit alarm
value "0.0" (°C) that is set to the DATA display.
Press the SET/ENT key to accept low-limit alarm "0.0"
(°C).
Operation Parameter Screen
To the Operation Parameter Screen
Power ON
Step 2
Setting the alarm action
Setting the alarm setpoint
Setting the hysteresis
Setting the alarm ON delay
Setting the alarm OFF delay
Press this key for
more than 3 sec.
Press to display "A1."
Press or
to display "0.0."
Press .
Press to display
"OND."
Press .
Press or
to display "5.0."
Press or
to display "5."
Press .
Press .
Press or
to display "5."
Press .
Press for more
than 3 sec.
This completes the process for
setting the alarm ON delay.
10. INPUT ADJUSTMENTS
10.1 Setting Ranges and Factory-Set Values of Adjustment-Related Parameters
Setup Parameter Screen 2
Parameter
Symbol
Parameter Name
Setting Range
Factory-Set Value
Input adjustment
reset (RST)
OFF (0) or ON (1)
(This parameter is used (set to ON) to reset adjusted
values.)
OFF
Input adjustment
point LOW (BL)
±10% of the instrument input range span (and BL < BH)
Minimum value of the
instrument input range
Input adjustment
LOW (AL)
±10% of the instrument input range span (and AL < AH)
Minimum value of the
instrument input range
Input adjustment
point HIGH (BH)
±10% of the instrument input range span (and BL < BH)
Maximum value of the
instrument input range
Input adjustment
HIGH (AH)
±10% of the instrument input range span (and AL < AH)
Maximum value of the
instrument input range
10.2 Instrument for Adjustments
•
6-dial decade resistance box (YOKOGAWA 279301 or equivalent): 1
10.3 Input Adjustment
10.3.1 Connecting the Adjustment Instrument
Connect the input and supply voltage as shown in the figure below.
10 11
1 2
3
9
8 7
6 5
4
7
8
N–
L+
(SUPPLY)
4
6
5
B
B
A
Input signal
Power supply
6-dial decade
resistance box
10.3.2 Adjusting Inputs
Carry out input adjustments between two points, or the minimum value (BL: input adjustment
point LOW) and maximum value (BH: input adjustment point HIGH) that have been set within the
adjustment range (see Section 10.1).
This subsection describes an example of making an input adjustment between two points within the
range of -50.0 to 150.0°C with the MVRK range code No. set to “62” (instrument input range: -199.9
to 200.0°C).
Press to display
"LOC."
Press to display
"-1."
The MVRK enters the operable status as soon as the power is turned on, but requires 10 to 15 minutes
of warm-up to meet the performance requirements.
When you press the SET/ENT key for more than 3 sec.
with the Operation Parameter Screen displayed, the Setup
Parameter Screen 1 appears.
When the power is turned on, the PV screen of the
Operation Parameter Screen appears.
Press the SET/ENT key to display parameter "BL."
In this case, the DATA display shows "-199.9," the
minimum value of instrument input range of the set range
code No.
Press the UP key to display "-50.0" on the DATA display.
Press the SET/ENT key to accept this data.
Press the SET/ENT key to display the next parameter.
This causes parameter "AL" and the measured value to
appear alternately.
Press the UP or DOWN key.
The decimal point blinks.
Press the SET/ENT key.
The value before adjustment (-52.2) appears on the DATA
display.
Press the SET/ENT key to display the next parameter "BH."
Press this key for
more than 3 sec.
The decimal point blinks.
The decimal point blinks during
data change.
The decimal point blinks during
data change.
Press the SET/ENT key to display parameter "LOC."
Press the DOWN key to display "-1" on the DATA display.
Press the SET/ENT key to display the Setup Parameter
Screen 2.
Setup Parameter Screen 1
Setup Parameter Screen 2
Operation Parameter Screen
Power ON
Using the 6-dial variable resistor, apply resistance equivalent
to the input -50°C to the MVRK.
In this case, the DATA display shows "200.0," the
maximum value of instrument input range of the set range
code No.
Press the DOWN key to display "150.0" on the DATA
display.
Press the SET/ENT key to accept this data.
Press the SET/ENT key to display the next parameter.
The decimal point blinks during
data change.
Press .
Press to
display "BL."
Press to display
"-50.0."
Press .
Press .
The measured value and
parameter AL are
displayed alternately.
Press or .
Press .
Press .
"-52.2" appears on the
DATA display.
Press to display
"150.0."
Press .
Press .
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