ABB ACSM1 - Ramp

Standard function blocks
346
Inputs Proportional gain input (P): REAL
Integration time constant input (tI): REAL. 1 = 1 ms
Derivation time constant input (tD): REAL. 1 = 1 ms
Antiwind-up correction time constant input (tC): IQ6. 1 = 1 ms
Output high limit input (OHL): REAL
Output low limit input (OLL): REAL
Actual input (IN_act): REAL
Reference input (IN_ref): REAL
Integrator reset input (I_reset): Boolean
Balance input (BAL): Boolean
Balance reference input (BAL_ref): REAL
Outputs Output (Out): REAL
Error code output (ERROR): INT32
Deviation output (Dev): REAL (= actual -reference = IN_act - IN_ref)
High limit output (O=HL): Boolean
Low limit output (O=LL): Boolean
RAMP
(10066)
Illustration
Execution time 4.23 µs
Operation Limits the rate of the change of the signal.
The input signal (IN) is connected directly to the output (O) if the input signal does not
exceed the defined step change limits (STEP+ and STEP-). If the input signal change
exceeds these limits, the output signal change is limited by the maximum step change
(STEP+/STEP- depending on the direction of rotation). After this the output signal is
accelerated/decelerated according to the defined ramp times (SLOPE+/SLOPE-) until
the input and output signal values are equal.
The output is limited by the defined minimum and maximum values (OLL and OHL):
If the actual value of the output exceeds the specified minimum limit (OLL), output O=LL
is set to 1.
If the actual value of the output exceeds the specified maximum limit (OHL), output
O=HL is set to 1.
If balancing input (BAL) is set to 1, the output (O) is set to the value of the balance
reference input (BAL_ref). Balancing reference is also limited by the defined minimum
and maximum values (OLL and OHL).
RAMP
64
TLA1 1 msec (1)
IN
STEP+
STEP-
SLOPE+
SLOPE-
BAL
BALREF
OH L
OLL
O
O(64)
O=HL
O=HL(64)
O=LL
O=LL(64)