Lenze E82xVxxxKxxxxx - Manual (Page 303)

Function library
Configuration of analog and digital setpoints and actual values
Digital setpoints via frequency input
10
l
303 EDS82EV903 EN 3.0
Example: Calibration when using a process controller
Example for pressure control
The control range of a pressure control is to be limited to a value lower than the rated
sensor value P
rated
. For this purpose, the effective pressure setpoint can be proportionally
reduced through the gain of the analog input (C0027, C0414):
ƒ Actual pressure value via pressure sensor (P
N
= 0 − 200 mbar) at X3/2U
(C0412/5 = 4).
ƒ Analog pressure setpoint via X3/1U (C0412/4 = 1).
ƒ The maximum pressure is to be limited to 120 mbar. Reduce the effective pressure
setpoint via the gain of the analog input.
C0414ń1 +
P
1
P
N
@ 100 % + 120 mbar
200 mbar @ 100 % + 60 %
10.7.3 Digital setpoints via frequency input
Description
Digital inputs E1 and E2 of the standard I/O or the application I/O can be configured as
frequency inputs. That way, a digital frequency can be selected as setpoint or actual value:
ƒ When operating with standard I/O:
– Single−track: 0 ... 10 kHz at X3/E1
– Two−track: 0 ... 1 kHz at X3/E1 and X3/E2
ƒ When operating with application I/O
– Single−track: 0 ... 102.4 kHz at X3/E1
– Two−track: 0 ... 102.4 kHz at X3/E1 and X3/E2