Siemens Moore 353, Руководство пользователя

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Function Blocks UM353-1
March 2003 3-92
A nalog Input
RATE LIMITER
E R
D
I N U A
UP RATE (units/minute)
(S)
....... Real (100.0)
INPUT A
(H)
.....
loop tag.block tag.output (null)
O1 O utput 1
RATE LIMITER
RLM_ ESN = 000
A T P
T P
A
E S N
E xec. S eq. N o.
(H)
............ 001 to 250
E nable
E
FL F alling L imit
U
O W R E A N
I N U E T P
INPUT E
(H)
.....
loop tag.block tag.output (null)
T
DOWN RATE (units/minute)
(S)
. Real (100.0)
RL R ising Limit
I N U T P
I N U T P
A
A
U
D
INPUT AU
(H)
..
loop tag.block tag.output (null)
INPUT AD
(H)
..
loop tag.block tag.output (null)
A daptive U p
AU
A daptive D n
AD
3.2.84 RLM_ - Rate Limiter (V3.0)
RLM_ function blocks limit the rate of change of
analog input A. Separate up and down rates are
entered in configuration, in engineering units per
minute. Output RL will be high (1) if the block is
limiting a rising input signal and output FL will be high
when the block is limiting a falling input signal.
The Adaptive Rate inputs will vary the configured
adaptive rate between 0 – 100% as the input varies
from 0 to 100%. When the input is not configured the
adaptive rate will not apply.
Input E asserted high (1) will enable the limit action of
the block. When input E is low (0), the output will
track the analog input. If input E is not configured, the
limit action of the block will be enabled
BLOCK DIAGRAM
A
O1
E
E nable
UPRATE
DOWNRATE
A nalog Input
O utput 1
RL
FL
R ising L imit
F alling L imit
.
.
Switch shown in the enabled position with Input E not connected
AU
AD
A daptive Rate U p
A daptive Rate D own
Rev. 2
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