User`s manual

Section 4 – Press Options
Dukane Part No. 403–556–03
Page 37
Electronic Press Controls
The electronic press controls consist of the following three
components:
Electronic Pressure Regulator
The electronic pressure regulator, (I/P transducer) is an electro-pneu-
matic replacement for the manually adjusted air regulator on the press.
The I/P transducer converts the electrical signal current (I) into air
pressure (P). The Electronic Regulator converts the electrical signal from
the DPC into the programmed air pressure.
The pressure value settings, “Pressure 1” (P1) and “Pressure 2” (P2), are
stored in the Process Setup under Pressure in the DPC. P1 and P2 are
set in pounds per square inch (PSI), or BARS.
To monitor Pressure 1 and Pressure 2 values, use the Check Pressure
parameter, contained in the Operate Setup under View Parameters (on
the DPC).
The DPC uses a pressure transducer to measure the I/P output pres-
sures.
The I/P transducer installed in this thruster/press does not require on-
site calibration. The unit is equipped with self- correcting, closed-loop
circuitry.
Pressure Transducer
The pressure transducer (P/I transducer) performs the same function
as the air gauge on the press. The P/I transducer converts air pressure
(P) to an electrical signal current (I). It then sends the signal to the DPC.
The DPC displays this signal as pressure.
Two sets of upper and lower limits can be monitored with the pressure
transducer:
One set is used to monitor the air pressure before a cycle starts.
Using the bad parts limits, the unit will not begin a cycle if the air
pressure is outside the pressure window that has been set.