Azbil Micro Flow MQV0005, User Manual

Page: 57 / 90

5-11
Chapter 5. ADVANCED OPERATION
*8 If “5,” “6,” or “8” (operation mode switching) is selected for one of the external contact input func-
tion assignments (
C- 10
to
C- 12
) and if the valve is set to fully closed or fully open mode by
external contacts, the operation mode cannot be switched using the [RUN] key.
If the valve is set to control mode by external contacts, the operation mode can be switched
using the [RUN] key.
Based on the settings for
C- 10
to
C- 12
, the operation mode changes in accordance with the
input status as shown in the table below.
C- 10
to
C- 12
settings
Status of external contact input
ON OFF
5 Fully closed mode Control mode
Operation mode can be switched between control
/ fully closed / fully open using the [RUN] key.
6 Fully open mode Control mode
Operation mode can be switched between control
/ fully closed / fully open using the [RUN] key.
8 Control mode
Operation mode can be switched be-
tween control / fully closed / fully open
using the [RUN] key. Fully open mode
Handling Precautions
•
When the operational differential pressure setting (
C-36
) is changed
to "0: Low differential pressure (50 ± 50 kPa)," always use the device
with an operational differential pressure less than 100 kPa. Failure to
do so may cause overshoot or hunting of the flow rate.