Rockwell Automation 1771-QDC, D17716.5.86(Passport) PLASTIC MOLDING MODULE - Manual (Page 54)

Enter Your PressureĆalarm and TimeĆdelay Values Here
Configure the QDC Module's I/O
Chapter 3
3-16
Set Up Maximum Pressure Alarms and Time Delays
The QDC module continuously monitors ram (screw) and clamp pressure
inputs. When it detects that the process input equals or exceeds a preset
alarm setpoint, the QDC module sets an alarm bit. A setpoint of zero
disables the associated alarm.
To guard against nuisance alarms caused by noise spikes or pressure
transients, you can set a time delay so the QDC module must monitor
continuous excessive pressure for an amount of time before setting the
high pressure alarm. A setpoint of zero disables this delay.
Configure the QDC module for pressure alarms as follows:
1. Determine these values for ram (screw) and/or clamp pressure
alarms:
pressure-alarm setpoint
time-delay setpoint
2. Record non-zero setpoints on Worksheet 3-G for the pressure alarms
and time delays you want to use.
3. Download them to the QDC module using the procedures presented
earlier in this chapter.
Worksheet 3ĆG
PressureĆalarm and TimeĆdelay Setpoints
Control Word ProĆSet 600 Addr. Value Description Units
MCC21 N40:17 Screw PressureĆalarm Setpoint Ram (screw) Pressure 2
MCC22 N40:18 ScrewĆpressure TimeĆdelay Setpoint Time Measured in Seconds 1
MCC35 N40:31 Clamp PressureĆalarm Setpoint Clamp Pressure 2
MCC36 N40:32 ClampĆpressure TimeĆdelay Setpoint Time Measured in Seconds 1
1 Time Measured in Seconds 2 Pressure
00.00 to 00.99 0000 to 9999 PSI
000.0 to 999.9 Bar