Moeller DF51 - Mathematical and Logic Functions; Mathematical Functions

10/05 AWB8230-1541GB
Mathematical and logic
functions
127
Mathematical and logic functions
The DF51 can establish mathematical links (CAL) between two
analog inputs and logic links (LOG) between two digital inputs.
Mathematical functions
With PNU A143 you can establish a mathematical link between
two input signals (A and B). With PNU A142 select an input signal
as value A and with PNU A143 a second input signal as value B.
The result (CAL) is available as reference frequency (F-COM) in
PNU A001 or as process variable (PV=) for PID control in
PNU A075.
Figure 134:Mathematical linking of A and B
A
RUN
PRG
Hz
PRG
ENTER
IO
POWER
ALARM
00
01
02
03
04
A141
Modbus
A
CAL
B
A142
00
01
02
03
04
00
01
02
A + B
A B
A x B
A143
H O OI L
10F-COM
A001
03PV
A075
PNU Name RUN b031
= 10
Value Function DS
A141 Calculator –
select input A
– j 00 Keypad value 02
01 Potentiometer of keypad
02 Analog input (O)
03 Analog input (OI)
04 Serial interface (Modbus)
A142 Calculator –
select input B
– j 00 Keypad value 03
01 Potentiometer of keypad
02 Analog input (O)
03 Analog input (OI)
04 Serial interface (Modbus)
A143 Calculator –
operation
– j 00 Addition (A + B) 00
01 Subtraction (A – B)
02 Multiplication (A x B)