Red Lion PCU - Manual

1
DSP
PAR
%PW
DEV
MAN
OP1
AL1
AL2
.40 1.95
3.80
(96.5)
(10.2)
3.60
(91.4)
5.29
5.41
1.75
(44.4)
(134.4)
(137.4)
(49.5)
1.77
(45 )
3.62
(92 )
+.02
-.00
+.6
-.0
+.03
-.00
+.8
-.0

100 MSEC SAMPLING PERIOD WITH 0.15% ACCURACY

ON DEMAND AUTO-TUNING OF PID CONTROL SETTINGS

DUAL LED DISPLAYS FOR SIMULTANEOUS INDICATION OF
PROCESS VALUE AND SETPOINT OR SECOND ANALOG INPUT

ACCEPTS EITHER 0 to 10 VDC OR 0 to 20 mA DC INPUTS

SELF-DIAGNOSTICS

FULL PID CONTROL WITH REDUCED OVERSHOOT

OPTIONAL RS485 SERIAL COMMUNICATIONS INTERFACE

OPTIONAL DUAL ALARM OUTPUTS (USES OUTPUT MODULES)

OPTIONAL SECONDARY OUTPUT (USES OUTPUT MODULE)

OPTIONAL LINEAR 4 to 20 mA OR 0 to 10 VDC OUTPUT FOR
CONTROL OR PROCESS VALUE RE-TRANSMISSION

OPTIONAL MOTORIZED VALVE POSITION CONTROL AND
VALVE FAIL ALARM

OPTIONAL SECOND ANALOG INPUT FOR REMOTE SETPOINT
AND CASCADE CONTROL

OPTIONAL TYPE 4X/IP65 SEALED FRONT BEZEL

STATUS INDICATORS FOR OUTPUTS AND CONTROL MODES

PROGRAMMABLE USER INPUT (DIGITAL) FOR ADDED
FLEXIBILITY

MANUAL/AUTOMATIC AND LOCAL/REMOTE SETPOINT
CONTROL MODES

SETPOINT RAMPING FOR PROCESS STARTUP

PARAMETER SECURITY VIA PROGRAMMABLE LOCKOUTS

FIELD REPLACEABLE AND INTERCHANGEABLE OUTPUT
MODULES (Relay, Logic/SSR Drive and Triac)
DESCRIPTION
The PCU Controller accepts either 0 to 10 VDC or a 0 to 20 mA DC input
signal, precisely scales the process signal according to programmable scaling
points, and provides an accurate output control signal (time proportional, linear,
or valve position) to maintain a process at the desired control point. A
comprehensive set of easy to use program instructions allows the controller to
solve various applications.
The controller can operate in the PID control mode for both the main output
and optional secondary output, with on-demand auto-tune, that establishes the
tuning constants. The PID tuning constants may be fine-tuned by the operator
at any time and then locked-out from further modification. The controller
employs a unique overshoot suppression feature, which allows the quickest
response without excessive overshoot. The unit can be transferred to operate in
the manual mode, providing the operator with direct control of the output. The
controller may also be programmed to operate in the ON/OFF control mode
with adjustable hysteresis.
Dual 4-digit displays allow viewing of the process value and setpoint
simultaneously. Front panel indicators inform the operator of the controller and
output status. Replaceable and interchangeable output modules (Relay, Logic/
SSR Drive, or Triac) can be installed for the main control output, alarm
output(s) and secondary output.
MODEL PCU - PROCESS CONTROL UNIT
DIMENSIONS In inches (mm)
Note: Recommended minimum clearance (behind the panel) for mounting clip installation is 5.5" (140) H x 2.1" (53.4) W.
Bulletin No. PCU-F
Drawing No. LP0338
Released 08/13
Tel +1 (717) 767-6511
Fax +1 (717) 764-0839
www.redlion.net
C US LISTED
UL
R
51EB
IND. CONT. EQ.
PANEL CUT-OUT