YOKOGAWA MW100 User Manual

1-16
IM MW100-01E
Rate of Change Upper Limit / Lower Limit Alarm
The rate of change of the measured values is checked over the rate-of-change detection
interval. An alarm occurs if the rate of change of the measured value in the rising
direction exceeds the specified value.
Change in the
measured value
T
Time
Interval
1
T
2
t
1
t
2
21
Amount of change in
the setting
T
Time
2
T
1
t
1
t
2
Computed value
Change in the
computed valu
e
t –t
Interval
2
1
t –t
21
T –T
High limit on rate-of-change alarm Low limit on rate-of-change alarm
Computed value
Amount of change in
the setting
1
T –T
2
Alarm Hold/Non-Hold
You can select whether, when factors resulting in output cease to exist, alarms are
cleared when the output factors are cleared, or alarms are held for their full duration ( alarm
ACK*).
Output cause
occurrence
• When set to non-hold
• When set to hold
ON
Alarm
OFF
Output cause
occurrence
ON
Alarm
Status lamp
ALARM
Monitor screen
alarm view
Status lamp
ALARM
Monitor screen
alarm view
OFF
Alarm ACK
Alarm ACK
* By clicking the Alarm ACK button in the browser’s monitoring screen or by sending an
equivalent communication command.
Operation Modes and Statuses
The MW100 has a Setting mode in which input ranges and other settings can be entered,
and a Measurement mode in which data acquisition is performed. The mode switches
depending on the measurement item of the status information.
Mode Status Info Description
Measurement
Setting mode Stop For entering range, system, communication, and
display settings
Measurement mode Start For data monitoring, computation, and recording
* The instrument must be in measurement mode in order for the status of computation and
recording to be Start.
Tag Strings
You can select whether to display tags or channel numbers on all channels.
1.3 Functions of the Main Module

YOKOGAWA MW100 Specifications

General

Brand	YOKOGAWA
Model	MW100
Category	Data Loggers
Language	English