Siemens 125-5033 Owner's Manual page 6

Two-state constant volume fume hood controller

Table of Contents

Applications .................................................................................................................. 11

Fume Hood Controller: 2-Position Constant Volume ............................................... 11

Basic Operation ............................................................................................................ 12

High and Low Exhaust Flow Control ......................................................................... 12

Control Loops ......................................................................................................... 12

Calibration ................................................................................................................. 12

DO3 Output Functionality .......................................................................................... 13

Warning and Alarm Features .................................................................................... 13

Warning Operation .................................................................................................. 13

Alarm Operation ...................................................................................................... 13

Alarm Strategies ..................................................................................................... 14

Emergency Purge Feature ........................................................................................ 14

Emergency Purge Operation .................................................................................. 14

Emergency Purge Strategies .................................................................................. 15

Fail-safe Operation .................................................................................................... 16

Fume Hood Controller ............................................................................................ 16

ODP ........................................................................................................................ 16

Differential Pressure Transmitter ............................................................................ 16

Electronic Actuator Assembly ................................................................................. 16

Pneumatic Actuator ................................................................................................ 16

AO-P Module .......................................................................................................... 16

Point Database .............................................................................................................. 17

Troubleshooting ........................................................................................................... 20

Basic Service Information ......................................................................................... 20

Preventive Maintenance ............................................................................................ 20

Safety Features ......................................................................................................... 21

Controller LEDs ......................................................................................................... 21

Glossary ........................................................................................................................ 22

Index .............................................................................................................................. 26

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