Pr 5220 instrument manual commissioning – Rice Lake PR5220 Ethernet Transmitter User Manual
Page 103
PR 5220 Instrument Manual
Commissioning
Sartorius
EN-103
Example:
The output signal (Limit 1 out) of limit 1 switches
OFF above a weight of 900 kg. The output signal
(Limit 2 out) of limit 2 switches OFF below a
weight of 290 kg. Both limit values have a
hysteresis of 10 kg.
In the event of a power failure, the two outputs
go to OFF, thus indicating underfill and overfill at
the same time.
If the limits (Limit 1 and Limit 2) for 'On' and 'Off'
are equal (on = off), output 1 (Limit 1 out)
switches ON, when the weight (Wgt) exceeds the
value and output 2 (Limit 2 out) switches OFF,
when the weight drops below the value.
1. Determining an action
Determine the action for the rising edge of the reference signal under [Limit 1 on] from the following list
(here: Marker 1 is set when 900 kg are exceeded).
Accordingly, an action for [Limit 1 off] can be determined.
Setup/
Limit parameter
Limit 1 on
900 kg
Action
set marker 1
X64=1
Condition
no condition
-----
Function
SPM Bit
-no action-
-----
no function
set marker 1
X64=1
Set marker 1
set marker 2
X65=1
Set marker 2
set marker 3
X66=1
Set marker 3
clr marker 1
X64=0
Clear marker 1
clr marker 2
X65=0
Clear marker 2
clr marker 3
X66=0
Clear marker 3
Note:
The limit values can be assigned to the outputs directly in the I/O parameters.