Bronkhorst Multibus Manual do Utilizador Página 29
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BRONKHORST®
Page 29 Operational instructions for digital multibus instruments 9.17.023
6.13 USING AN ALARM (EXAMPLES)
Using the alarms will take three steps:
1. Preparing the instrument (setting correct values for mode, limits etc.)
2. Monitoring the alarm info byte (gives info which alarm has occurred)
3. Resetting the alarm (will re-initialize the alarm and set output to normal values again)
6.13.1 Using maximum and minimum alarm
This alarm will check if the measured signal crosses the maximum or minimum limit set by the user.
Example
Send following parameter values:
Action
Parameter
Value
Maximum alarm on 90%.
send to
Alarm maximum limit
28800
Minimum alarm on 10%.
send to
Alarm minimum limit
3200
No new setpoint wanted at crossing alarm limit.
send to
Alarm setpoint mode
0
Reset alarm enable *
12
Delay on action at output should be 10 seconds.
send to
Alarm delay time
10
Reset should be automatically, when signal
comes into safe area again or via FLOW-BUS.
send to
Alarm mode
1
*) Default all reset inputs are enabled, so this command isn’t really necessary
Now the alarm will be active.
Alarm status can be monitored by means of parameter alarm info.
Resetting the alarm will need the following command reset = 0 and then reset = 2.
To inactivate the alarm, put it in alarm mode “off”. This will also reset your outputs.
This can be done sending command: alarm mode = 0.
6.13.2 Using instrument with response alarm
This alarm will check if the measured value will come within an area limited by maximum limit and minimum limit,
related to the setpoint, within a certain delay-time.
Example
Send following parameter values:
Action
Parameter
Value
Maximum alarm limit on setpoint + 3%.
send to
Alarm maximum limit
960
Minimum alarm limit on setpoint – 0.9%.
send to
Alarm minimum limit
288
Setpoint wanted at crossing alarm limit = 0%.
send to
Alarm setpoint mode
1
send to
Alarm new setpoint
0
send to
Reset alarm enable *
5
Delay on action at output should be 2 minutes.
send to
Alarm delay time
120
Reset via keyboard or BUS/RS232.
send to
Alarm mode
2
*) Default all reset inputs are enabled, so this command isn’t really necessary
Now the alarm will be active.
Alarm status can be monitored by means of parameter alarm info.
Resetting the alarm will need the following command reset = 0 and then reset = 2.
To inactivate the alarm, put it in alarm mode “off”. This will also reset your outputs.
This can be done sending command: alarm mode = 0.
- Instruction manual 1
- Disclaimer 2
- Symbols 2
- Warranty 2
- TABLE OF CONTENTS 3
- 1.1 INTRODUCTION 5
- 1.2 MULTIBUS TYPES 5
- 2 DIGITAL INSTRUMENT 7
- MEASURE 9
- CONTROL 9
- XdXcXbaY ⋅+⋅+⋅+= 10
- 2.5.1 General information 11
- 3.1 GENERAL 12
- 3.2 BRONKHORST SOFTWARE 12
- 3.3 PARAMETER USE 13
- Valve output 14
- Fluid name 14
- BRONKHORST® 15
- 4.1 MEASURE UNIPOLAIR 16
- 4.9 ANALOG INPUT 18
- 4.10 CONTROL MODE 18
- 4.11 SLAVE FACTOR 19
- 4.12 FLUID NUMBER 19
- APACITY UNIT INDEX 21
- APACITY UNIT 22
- 5 CONTROL PARAMETERS 23
- 1.05*response oldresponse New 24
- ALVE SAFE STATE 25
- 6 ALARM / STATUS PARAMETERS 26
- LARM DELAY TIME 28
- ESET ALARM ENABLE 28
- TATUS OUT POSITION 28
- SING AN ALARM (EXAMPLES) 29
- 7 COUNTER PARAMETERS 30
- 7.5 COUNTER LIMIT 31
- 7.6 COUNTER UNIT INDEX 31
- 7.8 RESET COUNTER ENABLE 32
- 8 IDENTIFICATION PARAMETERS 34
- DENTIFICATION NUMBER 35
- EVICE TYPE 35
- 9 SPECIAL PARAMETERS 36
- S1S2S3S4 37
- 10.1 ZEROING 39
- ESTORE PARAMETER SETTINGS 40
- 11.1 GENERAL 41
- 11.2 LED’S INDICATIONS 42
- Indication 43
- 11.3.1 General 45
- 11.4.1 Read control mode 48
- 11.4.2 Change control mode: 48
- 12 TESTING AND DIAGNOSTICS 49
- +31 573 45 88 39 50
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