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DESCRIPTION
precisely displays the input process signal according to the programmable
scaling points, and provides an accurate output control signal (time proportional
or linear DC) to maintain the process at the desired control point. The
controller’s comprehensive yet simple programming allows it to meet a wide
variety of application requirements.
which will establish 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 operate in the ON/OFF control mode with
adjustable hysteresis. a second setpoint is available to allow quick selection of
a different setpoint setting.
Front panel indicators inform the operator of the controller and output status. On
some models, the main control output and the alarm outputs are field
replaceable.
actions (Absolute HI or LO, Deviation HI or LO, and Band IN or OUT) with
MODEL P48 - 1/16 DIN PROCESS CONTROLLER
DIMENSIONS In inches (mm)
PID CONTROL WITH REDUCED OVERSHOOT
ACCEPTS 0 to 10 VDC or 0/4 to 20 mA DC INPUTS
OPTIONAL TWO LINEAR DC OUTPUTS (0 to 10 V, 0/4 to 20 mA)
OPTIONAL DUAL ALARM OUTPUTS
OPTIONAL REMOTE SETPOINT INPUT (0/4 to 20 mA)
OPTIONAL RS485 SERIAL COMMUNICATIONS
SECOND SETPOINT SETTING
SETPOINT RAMPING FOR PROCESS STARTUP
PROGRAMMABLE USER INPUT (Digital) FOR ADDED FLEXIBILITY
PARAMETER SECURITY VIA PROGRAMMABLE LOCKOUTS
MANUAL/AUTOMATIC CONTROL MODES
ON DEMAND AUTO-TUNING OF PID CONTROL SETTINGS
DUAL LED DISPLAYS FOR SIMULTANEOUS INDICATION OF
PROCESS AND SETPOINT
The P48 Controller accepts either a 0 to 10 VDC or a 0/4 to 20 mA DC signal,
In the PID control mode the controller operates with on-demand auto-tune,
Dual 4-digit displays allow viewing of the process and setpoint simultaneously.
Optional alarm(s) can be configured to activate according to a variety of
installation and operation of the unit.
Read complete instructions prior to
CAUTION: Risk of Danger.
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D
DV
(49.5)
MN
P
1.95
O1
A1
A2
(49.5)
1.95
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0.37
CAUTION: Risk of electric shock.
4.17 (105.9)
1
adjustable hysteresis. A standby feature suppresses the alarm during power-up
until the process stabilizes outside the alarm region. The second alarm can be
configured as a secondary PID output (heat/cool applications).
process re-transmission purposes. Programmable output update time reduces
valve or actuator activity. The output range can be scaled independent of the
input range.
process re-transmission, while the main Linear DC output is being used for
control. The output range can be scaled independent of the input range.
loops; and allows for remotely driven setpoint signal from computers or other
similar equipment. Straightforward end point scaling with independent filtering
and local/remote transfer option expand the controller’s flexibility.
communication between a P48 and other compatible equipment such as a printer,
PLC, HMI, or a host computer. In multipoint applications (up to thirty-two), the
address number of each P48 on the line can be programmed separately from 0 to
99. Data from the P48 can be interrogated or changed, and alarm output(s) may
be reset by sending the proper command code via serial communications. PC
software, SFCRM, allows for easy configuration of controller parameters. These
settings can be saved to disk for later use or used for multi-controller down
loading. On-line help is provided within the software.
front panel. The front panel meets NEMA 4X/IP65 specifications when properly
installed. Multiple units can be stacked horizontally or vertically. Modern surface-
mount technology, extensive testing, plus high immunity to noise interference
makes the controller extremely reliable in industrial environments.
STATUS INDICATORS FOR OUTPUTS AND CONTROL MODES
PC SOFTWARE AVAILABLE FOR CONTROLLER CONFIGURATION
NEMA 4X/IP65 BEZEL
Optional Main Linear DC output (10 V or 20 mA) can be used for control or
Optional Second Linear DC output (10 V or 20 mA) provides an independent
Optional Remote Setpoint input (0/4 to 20 mA) allows for cascade control
The optional RS485 serial communication interface provides two-way
The unit is constructed of a lightweight, high impact plastic case with a tinted
(44.7)
1.76
UL Recognized Component,
File # E156876
2
3
4
5
1
1.76 (44.7)
13
11
14
12
10
6
7
8
9
1.772
PANEL CUT-OUT
1.772
(45
(45
Bulletin No. P48-E
Drawing No. LP0464
Released 03/11
+0.6
+0.024
-0.000
-0.0
+0.6
+0.024
-0.000
-0.0
)
)
