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......RAMPS
........RAMP ACCEL TIME [54 ] = 10.0 SECS
........RAMP DECEL TIME [55 ] = 10.0 SECS
f.......RAMP QUENCH [56 ] = FALSE
........RAMP HOLD [57 ] = TRUE Linked to [281]
........RAMP INPUT [58 ] = 0.00 % Linked to [345]
........% S-RAMP [59 ] = 0.00 %
........RAMPING THRESH. [60 ] = 1.00 %
........AUTO RESET [61 ] = TRUE
........EXTERNAL RESET [62 ] = FALSE
........RESET VALUE [63 ] = 0.00 %
........RAMPING [21 ] = FALSE
........RAMP OUTPUT [47 ] = 0.00 %
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Ramp up time
Ramp down time
Symmetric Ramp Times
Reset Mode
Reset
System Reset
External Reset
%S-Ramp
Input
Reset Value
Ramping
Output
Symmetric time
Figure 5.2 System Ramp
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RAMP ACCEL / DECEL TIME Acceleration / Deceleration time. The times are for an output change from 0 to 100%.
([DPSOH
=
A change of Ramp Input from 10% to 50% with an acceleration time of 60 Seconds will take.
50% 10%
100%
60
−
×
Secs
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SRamp
Time
Ramp
=
Time
Ramp
Actual
Zero ramp times are a special case where the ramp can be effectively by-passed.
RAMP QUENCH
While TRUE the ramp input is held at zero. NOTE: This parameter is automaticall
set TRUE during a normal stop if USE SYSTEM RAMP is TRUE.
RAMP HOLD
While TRUE the ramp output is held at its last value. This is overridden by External
Reset or Auto Reset.
RAMP INPUT
Ramp Input TAG.
% S-RAMP
Percentage of ramp with S-shaped rate of change. A value of zero is equivalent to a
linear ramp. Changing this value affects the ramp times. See RAMP ACCEL/DECEL
TIME equation.
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