Delta DVP-ES2

3. Instruction Set
3-297
Device No.
Function
Set-point range
Explanation
S
3
+1 Proportional gain (K
P
) 0~30,000 (%)
The proportion for
magnifying/minifying the error
between SV and PV.
S
3
+2
Integration gain (K
I
) 0~30,000 (%)
The proportion for
magnifying/minifying the integral
value (The accumulated error).
For control mode K0~K2, K5.
Integral time constant
(T
I
)
0~30,000 (ms) For control mode K10
S
3
+3
Derivative gain (K
D
) -30,000~30,000 (%)
The proportion for
magnifying/minifying the
derivative value (The rate of
change of the process error). For
control mode K0~K2, K5.
Derivative time
constant (T
D
)
-30,000~30,000 (ms) For control mode K10
S
3
+4 Control mode
0: Automatic control
1: Forward control (E = SV - PV).
2: Reverse control (E = PV - SV).
5: Automatic mode with MV upper/lower bound control.
When MV reaches upper/lower bound, the
accumulation of integral value stops.
10: T
I
/ T
D
mode with MV upper/lower bound control.
When MV reaches upper/lower bound, the
accumulation of integral value stops.
S
3
+5, 6
Tolerable range for
error (E), 32-bit
0~2,147,483,647
E = the error between SV and
PV. If S
3
+5 is set as 5, when E is
between -5 and 5, E will be 0.
When S
3
+5 = K0, the function
will not be enabled.
S
3
+7, 8
Upper bound of output
value (MV) , 32-bit
-2,147,483,648~
2,147,483,647
Ex: if S
3
+6 is set as 1,000, MV
will be 1,000 when it exceeds
1,000. S
3
+6 has to be bigger or
equal to S
3
+7, otherwise the
upper bound and lower bound
value will switch
S
3
+9, 10
Lower bound of output
value (MV) , 32-bit
-2,147,483,648~
2,147,483,647
Ex: if S
3
+7 is set as -1,000, MV
will be -1,000 when it is smaller
than -1,000.
S
3
+11, 12
Upper bound of
integral value, 32-bit
-2,147,483,648~
2,147,483,647
Ex: if S
3
+8 is set as 1,000, the
integral value will be 1,000 when
it is bigger than 1,000 and the
integration will stop. S
3
+8 has to
be bigger or equal S
3
+9;
otherwise the upper bound and
lower bound value will switch.
S
3
+13, 14
Lower bound of
integral value, 32-bit
-2,147,483,648~
2,147,483,647
Ex: if S
3
+9 is set as -1,000, the
integral value will be -1,000
when it is smaller than -1,000
and the integration will stop.
S
3
+15, 16
Accumulated integral
value, 32-bit
Available range of
32-bit floating point
The accumulated integral value
is usually for reference. Users
can clear or modify it (in 32-bit
floating point) according to
specific needs.