Bardac PLX - Page 74

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74 CHA NGE PARA METERS

6.2.7 RUN MODE RAMPS / Ramp input PIN 26

The factory default connects T4 to PIN 26. This allo ws an external analogue reference to enter the ramp

input value, and then this parameter behaves as a monitor of the ramp input value.

6.2.8 RUN M ODE RA MPS / Forward minimum speed PIN 27

Note that w hen this parameter is set between 0 and + 0.5 %, then the ramp output follows the input at the

desired ramp rates through zero, i.e. there are no min speeds operating and there is no hysterisis around zero.

Note also that another mode of operation exists when the 27)FORW ARD MIN SPEED is greater than 0.5%,

AND, 28)REVERSE MIN SPEED is bet w een 0 and -0.5 %. (See below). In this case the 27)FORW ARD MIN

SPEED is operative and the ramp output will not go negative. This facility may be used to prevent accidental

negative rotation.

With 27)FORW ARD MIN SPEED and 28)REVERSE MIN SPEED outside a band of + /-0.5% , then both

minimum speeds will be active with 0.5 % hysterisis around zero.

6.2.9 RUN MODE RA MPS / Reverse minimum speed PIN 28

Note that when the FORW ARD MIN SPEED parameter (see above) is set betw een 0 and + 0.5 %, then the

ramp output follows the input at the desired ramp rates through zero, i.e. there are no min speeds operating

and there is no hysterisis around zero.

Note also that another mode of operation exists when 28)REVERSE MIN SPEED is betw een 0 and -0.5 %,

AND, 27)FORW ARD MIN SPEED is greater than 0.5%. In this case 27)FORW ARD MIN SPEED is operative

and the ramp output will not go negative. This facil ity may be used to prevent accidental negative rotation.

With 27)FORW ARD MIN SPEED and 28)REVERSE MIN SPEED outside a band of + /-0.5% , then both

minimum speeds will be active with 0.5 % hysterisis around zero.

RUN MODE RAMPS 3

27)FORW ARD MIN SPEED

0.00 %

PARA METER RANGE DEFAULT PIN

FWD MIN SPEED 0.00 to + 105.00 % 0.00% 2 7

Supports the forw ard + ve

ramp output at a minimum level

RUN MODE RAMPS 3

28)REVERSE MIN SPEED

0.00 %

PARA METER RANGE DEFAULT PIN

REV MIN SPEED 0 to -105.00 % 0.00 % 28

Supports the reverse -ve ramp

output at a minimum level.

RUN MODE RAMPS 3

26)RA MP INPUT

0.00 %

PARA METER RANGE DEFAULT PIN

RA MP INPUT + /-105.0 0% 0.00 % 26

Sets the run mode ramp input

value.