Azbil C1M - Special Control Output; Operation When Switched to MANUAL Mode

5-17
Chapter 5. Functions
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Special control output
The control output when the PV is abnormal and when the device is in READY
mode and can be specified.
Item (bank) Display Description Initial value User level
Output operation at PV alarm
(setup bank)
C 15
0: Continue the control calculation
1: Output the value set for “Output at PV
alarm”
0 Advanced
Output at PV alarm
(setup bank)
C 16
−10.0 to +110.0 % 0.0 % Advanced
Output at READY (Heat)
(setup bank)
C 17
−10.0 to +110.0 % 0.0 % Standard,
advanced
Output at READY (Cool)
(setup bank)
C 18
−10.0 to +110.0 % 0.0 % Standard,
advanced
• If CtrL (control method) is set to 1 (PID control) and C26 (heat/cool control) is
set to 1 or 2, C18 (output at READY (Cool)) is displayed and the setting can be
changed.
• When the PV is abnormal, AL01 or AL02 occurs.
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Operation when switched to MANUAL mode
The control output when the mode is switched from AUTO to MANUAL can be
set.
Item (bank) Display Description Initial value User level
Output operation at changing
AUTO/MANUAL
(setup bank)
C 19
0: Bumpless transfer
1: Preset
0 Standard,
advanced
Preset MANUAL value
(setup bank)
C 20
−10.0 to +110.0 % 0.0 or 50.0 % Standard,
advanced
• If C19 (output operation at changing AUTO/MANUAL) is set to 0 (bumpless
transfer), the MV when switched from AUTO to MANUAL is retained.
If 1 (preset) is set, the MV is changed to the value set by C20 (preset MANUAL
value) when the mode is switched from AUTO to MANUAL.
• If CtrL (control method) is set to 1 (PID control), C19 (output operation at
changing AUTO/MANUAL) and C20 (preset MANUAL value) are displayed and
the settings can be changed.
• The initial value of C20 (preset MANUAL value) is 0.0 when C26 (heat/cool
control) is set to 0 (not used), and 50.0 when the setting is 1 or 2 (use).
Handling Precautions
• If the mode is MANUAL at power ON, the MV will be the value set by C20
(preset MANUAL value).