Azbil Micro Flow MQV0005, Руководство пользователя

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1-3
Chapter 1. INTRODUCTION
•
Direct setup (function setup
C-2 1
)
When changing the flow set value by key input, the controlled
flow rate can follow the set value while changes are being made
(the flow set value can be changed quickly). This function is use-
ful when the user frequently changes set value, for example when
adjusting the flow set value during a trial run.
•
SP ramp control (function setup
C-27
)
This function is used to set the set value change ramp amount
(the rate of change per second) to a constant value for the start of
control and for set value changes. With this function, the set value
change ramp amount can be set more precisely than with the slow
start function. Two different types of ramps can be set, and there
are the following 2 control modes:
• SP ramp control 1
In SP ramp-up: Ramp 1
In SP ramp-down: Ramp 2
• SP ramp control 2
In external contact OFF: Ramp 1
In external contact ON: Ramp 2
•
SP limit (function setup
C-35
)
The lower and upper limits of the set value range can be set to de-
sired levels. (This prevents mistaken high/low settings.)
•
Slow start (function setup
C-1 7
)
Sudden changes in the controlled flow rate, when control is started
or when the set value is changed, can be suppressed. The control
speed can be changed in eight stages within a range of about 1 to 6
seconds.
•
Flow rate totalization (function setup
C-09
to
C-12
)
MQV9020/9050: in 1 mL units
MQV9500:
in 0.01 L units
MQV0005: in 0.1 L units
MQV0010/0050:
in 1 L units
MQV0200: in 0.01 m 3 units
Integrated flow count can be up to eight digits long (to 99,999,999)
for each unit. (Display alternates between first and last 4 digits.)
The count can be reset by key operation or external contact input.
Use of external contact input makes it possible to remotely operate
the start, temporary stop, and reset of totalization. When resetting
the integrated count by key operation, the count restarts automati-
cally after it has been reset. On the other hand, when resetting
with the external contact input (by contact ON), the count restarts
when the contact is turned OFF.