Red Lion PSC User Manual

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MODEL PSC - PROCESS SETPOINT CONTROLLER

 AUTOMATIC PROGRAM DELAY FOR PROFILE CONFORMITY,

PLUS PROGRAM LINKING, REPEATING AND AUTO POWER-ON
FUNCTIONS FOR ENHANCED CAPABILITY

 DUAL EVENT OUTPUTS FOR TIMED ACTIVATION OF PROCESS

EQUIPMENT SUCH AS STIRRERS, FANS, HEATERS, ETC. (Uses
Alarm Output Channels)

 FOUR SETPOINT & PID PARAMETER SETS FOR QUICK RECALL

OF SETPOINTS AND/OR GAIN VALUES DURING BATCH OR
PROCESS CHANGEOVER

 PROGRAMMABLE USER INPUT FOR CONTROLLER AND

SETPOINT PROGRAM CONTROL

 100 MSEC SAMPLING PERIOD WITH 0.15% ACCURACY

 ON DEMAND AUTO-TUNING OF PID CONTROL SETTINGS

 DUAL LED DISPLAYS FOR SIMULTANEOUS INDICATION OF

PROCESS AND SETPOINT OR PROCESS AND PROFILE STATUS

 ACCEPTS EITHER 0 to 10 VDC OR 4 to 20 mA DC INPUT SIGNAL

 FIELD REPLACEABLE AND INTERCHANGEABLE OUTPUT

MODULES (Relay, Logic/SSR drive, and Triac)

 SETPOINT PROGRAM CONTROLLER FOR TIME VS. PROCESS

(RAMP/SOAK) AND SPECIAL BATCH/RECIPE APPLICATIONS

 ADVANCED PROGRAM PROFILING IN A 1/8 DIN PACKAGE

 ON-LINE MONITORING AND CONTROL OF PROGRAM STATUS,

TIME, AND SETPOINT VALUE (Profile Run, Pause, Stop, Advance,
Modify Time, & Setpoint Value)

 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 RE-TRANSMISSION

 OPTIONAL RS485 SERIAL COMMUNICATIONS INTERFACE

 OPTIONAL TYPE 4X/IP65 SEALED FRONT BEZEL

Bulletin No. PSC-C

Drawing No. LP0315

Released 08/13

DESCRIPTION

The PSC is a setpoint controller suitable for time vs. process control
applications. The PSC Controller accepts either a 0 to 10 VDC or a 4 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
or linear) to maintain a process at the desired control point. A comprehensive set
of easy to use steps allows the controller to satisfy various applications. The user
input can be programmed to perform a variety of controller functions.

Dual 4-digit displays allow viewing of the measured process value and
setpoint or the process and profile status simultaneously. Front panel indicators
inform the operator of controller status and output states. Replaceable output
modules (Relay, logic/SSR drive or Triac) can be fitted to the main control
output, alarm output(s) or timed event output(s), and secondary output.

The PSC has been designed to simplify the set-up and operation of a
controlled setpoint profile program. The setpoint program is easily entered and
controlled through the front panel. Full display capabilities keep the operator
informed of the process value, profile status, output states, and setpoint value.

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.

5.41

(137.4)

%PW

MAN

AL1

PGM

OP1

DSP

PAR

3.80

AL2

(96.5)

The controller can operate in the standard PID control mode for both Output
1 and Output 2 with on-demand auto-tune which establishes the PID gain set.
The PID gain set can be fine tuned by the operator at any time or may be locked
from further modification. The unit can be transferred to the manual control
mode providing the operator with direct control of the output.

The PSC features four programs or profile recipes, each with up to eight
ramp/soak segments, which can be easily stored and executed at any time.
Longer profiles can be achieved by linking one or more profiles together,
creating a single profile of up to 32 ramp/soak segments. Process profile
conformity is assured during either soak (hold) phases or both ramp and hold
phases by an adjustable error band parameter. The program repeat function
cycles the profile either continuously or a set number of times. Power-on options
automatically re-start, stop, or resume a running profile. The profile can be
controlled via the front panel buttons, the user input, or the optional serial
communications port.

PANEL CUT-OUT

+.02

1.77

-.00

+.6

(45 )

-.0

+.03

3.60

(91.4)

3.62
(92 )

-.00

+.8

-.0

1.95

(49.5)

.40

(10.2)

5.29

(134.4)

1.75

(44.4)

1

DESCRIPTION (Cont’d)

Four control points, each having a setpoint and PID parameter set, are
available for instant front panel implementation during batch changeover, or
other process conditions. A control point may have its PID gain set values
disabled when implementing the control point.

The optional RS485 multidrop serial communications interface provides the
capability of two-way communication between a PSC unit and other compatible
equipment such as a printer, a programmable controller, or a host computer. In
multipoint applications the address number of each unit on the line can be
programmed from 0 to 99. Up to thirty-two units can be installed on a single pair
of wires. The Setpoint value, % Output Power, Setpoint Ramp Rate, etc. can be
interrogated or changed by sending the proper command code via serial
communications. Alarm output(s) may also be reset via the serial communications
interface option.

Optional alarm output(s) may be configured to operate as a timed event
output or as a standard alarm output. As an alarm output it may be configured to
activate according to a variety of actions (Absolute HI or LO, Deviation HI or
LO, or Band IN or OUT) with adjustable hysteresis. Also, a standby feature
suppresses the output(s) on power-up until the process stabilizes outside the
alarm region. Timed event output(s) allow the controller to activate other
equipment while a programmed profile is running. Each profile can define up to
16 event states (phases), for each output(s).

An optional secondary output is available for processes that require cooling
which provides increased control accuracy and response.

The optional linear 4 to 20 mA or 0 to 10 VDC output signal is available to
interface with final actuators, chart recorders, indicators, or other controllers. The
output signal can be digitally scaled and selected to transmit one of the following:

% Output Power
Measurement Value
Measurement Value Deviation
Setpoint Value

An optional Type 4X/IP65 rated bezel is available for washdown and/or dirty
environments, when properly installed. Modern surface-mount technology,
extensive testing, plus high immunity to noise interference, makes the controller
extremely reliable in industrial environments.

SAFETY SUMMARY

All safety related regulations, local codes and instructions that appear in the
manual or on equipment must be observed to ensure personal safety and to
prevent damage to either the instrument or equipment connected to it. If
equipment is used in a manner not specified by the manufacturer, the protection
provided by the equipment may be impaired.

Do not use the PSC to directly command motors, valves, or other actuators
not equipped with safeguards. To do so, can be potentially harmful to persons or
equipment in the event of a fault to the unit. An independent and redundant
process limit indicator with alarm outputs is strongly recommended. The
indicators should have input sensors and AC power feeds independent from
other equipment.

SPECIFICATIONS

1. DISPLAY: Dual 4-digit

Upper Process Display: 0.4" (10.2 mm) Red LED

Lower Auxiliary Display: 0.3" (7.6 mm) Green LED

Display Messages:

“OLOL” - Appears when measurement exceeds +105% of input range.
“ULUL” - Appears when measurement exceeds -5% of input range.
“SENS” - Appears when measurement exceeds “OLOL” & “ULUL”
range.

“....” - Appears when display value exceeds + display range.

“-...” - Appears when display value exceeds - display range.

2. POWER: Switch selectable 115/230 VAC (+10%, -15%) no observable line

variation effect, 48 to 62 Hz, 10 VA.

3. ANNUNCIATORS:

6 LED Backlight Status Indicators:

%PW - Lower auxiliary display shows power output in (%).
PGM - Lower auxiliary display shows profile status or profile time
remaining.
MAN - Controller is in manual mode.
OP1 - Main control output is active.
AL1 - Alarm #1 is active.
AL2 - Alarm #2 is active (for Dual Alarm Option).
OP2 - Secondary output is active (for Secondary Option).

4. CONTROLS: Four front panel push buttons for modifying and setup of

controller functions and one external input.

5. SETPOINT PROFILE:

Profiles: 4

Segments Per Profile: 8 ramp/hold segments (linkable to 32 segments).

Ramp Rate: 0.1 to 999.9 units/minute or no ramp.

Hold Time: Off or from 0.1 to 999.9 minutes, can be extended to 500 hours

by linking.

Error Band Conformity: Off or from 1 to 9999 units deviation, + value for

hold phases, - value for both ramp and hold phases.

Power-On Modes: Stop, auto-start, or profile resume.
Start Mode: Ramps from process value.
Program Auto Cycle: 1 to 249, or continuous.
Event Outputs: 2, time activated with profile [uses Alarm output(s)].
Control: Front panel buttons, user input, or RS485 communications.

6. CONTROL POINTS:
Setpoints: 4
PID gain sets: 4
Control: Front panel buttons or user input.

7. SIGNAL INPUT:
Sample Period: 100 msec
Response Time: 300 msec (to within 99% of final value w/step input).
Signal Overdrive Threshold:

10 V Range: 13 V
20 mA Range: 26 mA

Signal Overdrive Response:

Main Control Output: Programmable preset output.
Display: “SENS”
DC Linear: Programmable preset output.
Normal Mode Rejection: 40 db @ 50/60 Hz (improves with increased

digital filtering).

Common Mode Rejection: 100 db, DC to 50/60 Hz.

8. RANGE AND ACCURACY:

Signal Range

0 to 10 VDC ±(0.15% + 3 mV) 300 VDC 1M Ω 10 mV

0 to 20 mADC ±(0.15% + 6 µA) 200 mADC 10 Ω 10 µA

Accuracy (% of

Unscaled Reading)

Max. Input

Input

Impedance

Resolution

9. OUTPUT MODULES (For All Output Channels):
(Optional - Must be ordered separately)

Relay:

Type: Form-C (Form-A with RS485 option)
Rating: 5 Amps @ 120/240 VAC or 28 VDC (resistive load), 1/8 HP @

120 VAC (inductive load).

Life Expectancy: 100,000 cycles at max. rating. (Decreasing load and/or

increasing cycle time, increases life expectancy).

Logic/SSR Drive: Can drive multiple SSR Power Units.

Type: Non-isolated switched DC, 12 VDC typical
Drive: 45 mA max.

Triac:

Type: Isolated, Zero Crossing Detection.
Ratings: Voltage: 120/240 VAC

Max Load Current: 1 AMP @ 35°C

0.75 AMP @ 50°C

Min Load Current: 10 mA
Off State Leakage Current: 7 mA max. @ 60 Hz
Operating Frequency: 20 to 500 Hz
Protection: Internal Transient Snubber, Fused.

10. MAIN CONTROL OUTPUT:
Control: PID or ON/OFF.
Output: Time proportioning or linear DC.
Hardware: Plug-in, replaceable output modules.
Cycle time: Programmable.
Auto-tune: When performed, sets proportional band, integral time, and

derivative time values.

Probe Break Action: Programmable.

11. SECONDARY OUTPUT (Optional):

Control: PID or ON/OFF.
Output: Time proportioning or linear DC
Hardware: Plug-in, replaceable output modules.
Cycle time: Programmable.
Proportional Gain Adjust: Programmable.
DeadBand Overlap: Programmable.

12. LINEAR DC DRIVE (Optional): With digital scale and offset,
programmable deadband and update time.

4 to 20 mA:

Resolution: 1 part in 3500 typ.
Accuracy: ±(0.1% of reading + 25 µA).
Compliance: 10 V (500 Ω max. loop impedance).

0 to 10 VDC:

Resolution: 1 part in 3500 typ.
Accuracy: ±(0.1% of reading + 35 mV).
Min. Load Resistance: 10 K Ω (1 mA max.)

Source: % output power, setpoint, deviation, or process value.

(Available for OP1 or OP2, but not both.)

2

SPECIFICATIONS (Cont’d)

13. ALARMS (Optional):
Hardware: Plug-in, replaceable output module.
Modes: Absolute high acting

Absolute low acting
Deviation high acting
Deviation low acting
Inside band acting
Outside band acting
Timed event output(s)

Reset Action: Programmable; automatic or latched.
Delay: Programmable; enable or disable.
Hysteresis: Programmable.
Annunciator: LED backlight for “AL1”, “AL2”, (Alarm #2 not available

with secondary output).

14. SERIAL COMMUNICATIONS (Optional):

Type: RS485 Multi-point, Balanced Interface.
Communication Format:

Baud Rate: Programmable from 300 to 9600.
Parity: Programmable for odd, even, or no parity.
Frame: 1 start bit, 7 data bits, 1 or no parity bit, 1 stop bit.

Unit Address: Programmable from 0-99, max. of 32 units per line.
Transmit Delay: 100 msec min., 200 msec max.
RS485 Common: Isolated from signal input common.
Auto Print Time: Off to 9999 seconds between print-outs.

15. USER INPUT: VIN
Response time: 100 msec max.
Functions:

Program Lock Print Request
Integral Action Lock Load Control Point
Auto/Manual Transfer Run/Hold Profile 1
Setpoint Ramp Select Run/Stop Profile 1
Reset Alarms

16. ENVIRONMENTAL CONDITIONS:
Operating Temperature Range: 0° to 50°C
Storage Temperature Range: -40° to 80°C
Vibration to IEC 68-2-6: Operational 5-150 Hz, 1 g
Shock to IEC 68-2-27: Operational 5 g
Span Drift: 90 ppm/°C
Zero Drift: 0 to 10 VDC Range - 0.2 mV/°C

4 to 20 mA DC Range - 0.5 µA/°C

Relative Humidity: Less than 85% RH (non-condensing)
Altitude: Up to 2000 meters

17. CERTIFICATIONS AND COMPLIANCES:
CE Approved

EN 61326-1 Immunity to Industrial Locations
Emission CISPR 11 Class A
EN 61010-1

RoHS Compliant
UL Recognized Component: File #E156876
UL Listed: File #E137808
Type 2 Enclosure rating (Face only) for PSC0
Type 4X/IP65 Enclosure rating (Face only) for PSC1

Refer to EMC Installation Guidelines section of the manual for additional

information.

18. CONNECTION: Jaw-type terminal block.

19. CONSTRUCTION:

Front Panel: Flame and scratch resistant tinted plastic.
Case: High impact black plastic. (Mounting collar included).
Type 4X/IP65 model only: Sealed bezel utilizing 2 captive mounting screws

(panel gasket included). This unit is rated for Type 4X/IP65 indoor use.
Installation Category II, Pollution Degree 2.

20. WEIGHT: 1.3 lbs. (0.6 kgs)

= 5.25 VDC, VIL = 0.85 V

MAX

; VIH = 2.0 V

MAX

MIN

BASIC OPERATION

The PSC controls the process profile of a system by measuring the input
signal, comparing it to the setpoint value of the profile in progress, and
calculates the new output power value by use of a modified PID control
algorithm. The unit controls the system with the new output power value so the
process value conforms to the profile. The PID control algorithm incorporates
features which provide high control accuracy and low disturbance overshoot.

FRONT PANEL FEATURES

In the normal display mode, the unit will display the scaled process value in
the upper display. One of five other parameters may be selected for viewing in
the lower display:

Target setpoint
% Output Power
Profile Status
Profile phase time remaining
Blank the lower display.

The profile status display indicates the active program number with the
current ramp or hold phase of the program. The profile can be started, stopped,
advanced, etc., from the front panel when the profile status display is viewed, if
not locked from access.

The phase time remaining display, shows the time remaining in a ramp or hold
phase and, if not locked from access, may be changed on-line to effect temporary
changes to the profile. Additionally, the target setpoint and % output power
(manual mode only) may also be changed on-line or locked from operator access.

From the normal operating mode, parameters are selected by use of the PAR
button and modified by use of the UP and DOWN buttons. Parameters are then
entered by the PAR button, which advances the user to the next parameter.
Pressing the DSP button immediately returns the controller to the normal
operating mode from any parameter module. The controller configuration and
parameter settings are stored in an internal E2PROM device.

HARDWARE FEATURES

The fast 100 msec input sampling rate provides quick controller response to
a process disturbance for excellent process control. Measurement accuracy of

0.15% provides closer process control conforming to the desired control setpoint
value.

The unit will accept either a 0 to 10 VDC or a 4 to 20 mADC input signal.
The A.C. input power is switch selectable, allowing the unit to operate from
either 115 VAC or 230 VAC. Since the controller is serviceable from the front
of the panel, the output modules may be easily changed or replaced without
disturbing the wiring behind the panel and
NO re-programming is required. The
standard model simply requires pressing a
latch to remove the unit. The Type 4X/IP65
rated model utilizes two panel securing
screws and a neoprene gasket to guarantee
a water tight seal, when properly installed.

Low-drift, highly stable circuit design
ensures years of reliable and accurate
process control. The recommended two
year re-calibration interval is easily
accomplished via the programming menu.

Type 4X/IP65 BEZEL

%PW

MAN

OP1

AL1

AL2

PGM

DSP

PAR

3