BOILER SEQUENCING CONTROL User Manual

Loading ...

BSC Installation and Operation Manual

GAIN/THROTTLE

Adjustable from -10 to +10 Default: 0 in Normal Operating Mode

Adjustable from 1.0 to 10.0 Default: 5 in Process Operating Mode

SELECT: MENU/Gain

NORMAL OPERATING MODE

 ,Q1RUPDO2SHUDWLQJ0RGH6HHSDJH1), the Gain adjusts the aggressiveness of

the BSC PID logic to control how much modulation is changed when the system

temperature/pressure is different from the Set Point. It is based on he rate of change.

--------- GAIN ---------

[

]

 $*DLQRILVDJRRGVWDUWLQJSRLQWIRUDOOV\VWHPV

 ,IGXULQJQRUPDOORDGFRQGLWLRQVWKHV\VWHPWHPSHUDWXUHSUHVVXUHWHQGVWRRVFLOODWHVLJQL¿FDQWO\GHFUHDVHWKH*DLQE\WZRQXPEHUV

(for example, from 0 to -2). Wait for at least 15 minutes before evaluating how the change has affected the system.

 ,IGXULQJQRUPDOORDGFRQGLWLRQVWKHV\VWHPWHPSHUDWXUHSUHVVXUHWHQGVWRUHPDLQFRQVLVWHQWO\EHORZWKH6HW3RLQWRUFRQVLVWHQWO\

above the Set Point), increase the Gain by two numbers (for example, from 0 to 2). Wait for at least 15 minutes before evaluating

how the change has affected the system.

PROCESS OPERATING MODE

 7KH*DLQDFWVDVDWKURWWOLQJUDQJHDURXQGWKH6HW3RLQW

 :KHQWKHDFWXDOWHPSHUDWXUHSUHVVXUHLVHTXDOWRWKH6HW3RLQWWKHOHDGVWDJHZLOOEHDWPRGXODWLRQ

 (DFKWKURWWOLQJUDQJHDERYHRUEHORZWKH6HW3RLQWFRQWUROVRQHVWDJHVPRGXODWLRQOLQHDUO\IURPWR

 7KH3URFHVV*DLQ7DEOHEHORZVKRZVWKHUHODWLRQVKLSEHWZHHQWKH*DLQDQGVWDJHPRGXODWLRQ

 7KH3URFHVV*DLQ7DEOHGRHVQRWVKRZDOOWKHSRVVLEOHPRGXODWLRQYDOXHV7KHWDEOHLVIRUH[DPSOHRQO\7KH%6&ZLOOFRQWUROWKH

modulation in one percent increments based on the Set Point and Gain value.

PROCESS GAIN/THROTTLING RANGE TABLE

System Temperature Stages Modulation

More than 1 x Gain above Set Point Lead Stage is OFF

1 x Gain above Set Point Lead Stage at 1%

0.5 x Gain above Set Point Lead Stage at 50%

At Set Point Lead Stage at 100%

0.5 x Gain below Set Point Lead Stage at 100%, 1 Lag at 50%

1 x Gain below Set Point Lead Stage at 100%, 1 Lag at 100%

2 x Gain below Set Point Lead Stage at 100%, 2 Lag at 100%

3 x Gain below Set Point All Stages at 100%

LEAD STAGE

Adjustable from A through D Default: A

SELECT: MENU/Lead Stage

 7KH/HDG6WDJHLVWKH¿UVWVWDJHEURXJKWRQZKHQRXWSXWLVUHTXLUHG

 7KH/HDG6WDJHFDQEHURWDWHGPDQXDOO\RUDXWRPDWLFDOO\7KHDXWRPDWLFURWDWLRQLV

recommended.

 7KHFXUUHQW/HDG6WDJHLVVKRZQLQEUDFNHWVRQWKHGLVSOD\<A>

 2QO\VWDJHVWKDWDUHVHWWR$XWR0RGHFDQEH/HDG7KHUHIRUHQRWDOOVWDJHVPD\EH

available when manually selecting a new Lead Stage.

--- LEAD STAGE ---

140 F

<A> B C D

50% OFF OFF STB

LEAD AUTO ROTATE

Manual, Time, Last-On Default: Time

SELECT: MENU/System Settings/Auto Rotate

 7KH/HDG6WDJHZLOODOZD\VEHWKH¿UVWVWDJHDFWLYDWHGZKHQWKHUHLVDFDOOIRURXWSXW

 $XWRPDWLFDOO\URWDWLQJWKH/HDGDPRQJWKHDFWLYHVWDJHVSURPRWHVPRUHHYHQZHDURQ

the Stages and can help prolong the life of each unit.

 7KH/HDG6WDJHLVVKRZQRQWKHPDLQGLVSOD\LQEUDFNHWV<A>

LEAD AUTO ROTATE

Manual

Time

Last On

Loading ...

User Manual - Page 19