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9.5 Using as a Converter
This instrument can be used as a simplified converter.
Converts each input value (thermocouple, RTD, DC voltage and current inputs) to ‘4 to 20 mA DC’,
and outputs it.
When OUT1 is Direct current output, the controller can be used as a converter.
Select ‘Converter’ in [Controller/Converter] in Engineering mode 1.
Factory default value is Controller.
When this instrument is switched from controller to converter, values in the table below (Table 9.5-1)
are automatically set. The SV Display indicates nothing.
When this instrument is switched from converter to controller, the PV Display indicates
for
1 second, and factory default values are set.
(Table 9.5-1)
Setting Item
Set Value (or Selection)
SV1
(*1)
Scaling low limit value
AT/Auto-reset Perform/Cancel
(*2)
AT/At on startup/Auto-reset Cancel
OUT1 proportional band
(*1)
Scaling span
Direct current, voltage inputs: 100.0%
Integral time
0
Derivative time
0
Reset
0 (Reset value, calculated by Auto-reset function)
OUT1 high limit
100
OUT1 low limit
0
OUT1 rate-of-change
0
OUT2 proportional band
(*1)
Scaling span
Direct current, voltage inputs: 100.0%
Direct/Reverse action
Direct action
EV1/EV2 alarm value 0 Enabled/Disabled
Disabled
EV1/EV2 alarm value
0 or Input range low limit value (Scaling low limit
value)
EV1/EV2 high limit alarm value
0 or Input range low limit value (Scaling low limit
value)
EV1/EV2 alarm hysteresis
1.0
EV1/EV2 alarm delay time
0
EV1/EV2 alarm Energized/De-energized
Energized
Loop break alarm time
0
Loop break alarm span
0
Event output EV1 allocation
No event
Event output EV2 allocation
No event
SV rise rate
0
SV fall rate
0
OUT/OFF key function
Control output OFF function
(*1) When input range is changed while this instrument is used as a converter, SV1 to SV4, OUT1 and OUT2 proportional bands
will be automatically set to values corresponding to the input range.
(*2) If “AT on startup” is successfully completed and “AT on startup Perform” has been still selected, “AT on startup” will be stopped
(AT/AT on startup/Auto-reset Cancel).
Phone: 800.894.0412 - Fax: 888.723.4773 - Web: www.clrwtr.com - Email: [email protected]