2

Program Lock

Integral Action Lock

Auto/Manual Mode Select

Setpoint Ramp Enable

Reset Alarms

Setpoint 1/Setpoint 2 Select

Local/Remote Setpoint Select

Serial block print

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 P48 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 controller. An independent and redundant

process limit indicator with alarm outputs is strongly recommended.

SPECIFICATIONS

1. DISPLAY: Dual 4-digit

Upper Process Display: 0.4" (10.2 mm) high red LED

Lower Auxiliary Display: 0.3" (7.6 mm) high green LED

Display Messages:

“OLOL”

- Appears when measurement exceeds + input range.

“ULUL”

- Appears when measurement exceeds - input range.

“SENS”

- Appears when measurement exceeds controller limits.

“...”

- Appears when display values exceed + display range.

“-..”

- Appears when display values exceed - display range.

LED Status Annunciators:

%P

- Lower auxiliary display shows power output in (%).

MN

- Flashing: Controller is in manual mode.

On: Local Setpoint (Remote Setpoint option)

Off: Remote Setpoint

DV

- Lower auxiliary display shows deviation (error) from

setpoint.

O1

- Main control output is active.

A1

- Alarm #1 is active (for A1 option).

A2

- Alarm #2 is active OR

- Secondary output (02) is active.

2. POWER:

AC Versions: 85 VAC min. to 250 VAC max., 50 to 60 Hz, 8 VA max.

DC Versions:

DC Power: 18 to 36 VDC; 7 W

AC Power: 24 VAC

10%; 50 to 60 Hz, 9 VA

3. CONTROLS: Four front panel push buttons for modification and setup of

controller functions and one external user input for parameter lockout or other

functions.

and values.

5. RANGE AND ACCURACY:

* Accuracies are expressed as

percentages after 20 minutes warm-up. The

controller’s accuracy is specified in two ways: accuracy over an 18 to 28°C

range at 10 to 75% RH environment; and accuracy over a 0 to 50°C range

at 0 to 85% RH (non-condensing) environment. Accuracy over the wide

sensor range reflects the coefficient of the internal circuitry.

6. MAIN SIGNAL INPUT:

Sample Period: 100 msec

Response Time: Less than 300 msec typ., 400 msec max. (to within 99% of

final value w/step input; typically, response is limited to response time of

sensor)

Normal Mode Rejection: 40 dB @ 50/60 Hz (improves with increased

digital filtering.)

Common Mode Rejection: Greater than 120 dB, DC to 60 Hz

Protection: Input overload 120 VAC max. for 15 sec. max.

7. USER INPUT: Internally pulled up to +5 VDC (1 M

).

Response Time: 120 msec max.

Functions:

8. CONTROL AND ALARM OUTPUTS:

Relay outputs with Form A contacts:

Contact Rating: 3 A @ 250 VAC or 30 VDC (resistive load)

1/10 HP @ 120 VAC (inductive load)

Life Expectancy: 100,000 cycles at max. load rating.

(Decreasing load and/or increasing cycle time, increases life

expectancy.)

9. MAIN CONTROL:

Control: PID or ON/OFF

Output: Time proportioning or Linear DC

Cycle time: Programmable

Auto-tune: When selected, sets proportional band, integral time, and

derivative time values.

10. ALARMS: 1 or 2 alarms (optional)

Modes:

Reset Action: Programmable; automatic or latched

Standby Mode: Programmable; enable or disable

Hysteresis: Programmable

Annunciator: LED backlight for “A1”, “A2”

11. SECONDARY OUTPUT: Software selectable (overrides alarm 2)

Control: PID or ON/OFF

Output: Time Proportioning

Cycle time: Programmable

Proportional Gain Adjust: Programmable

Deadband /Overlap: Programmable

12. MAIN AND SECOND LINEAR DC OUTPUT: (optional)

Main: Control or re-transmission, programmable update rate from 0.1 sec to

250 sec

Second: Re-transmission only, fixed update rate of 0.1 sec

OUTPUT **

RANGE

ACCURACY *

(18 to 28°C)

ACCURACY *

(0 to 50°C)

COMPLIANCE

RESOLUTION

0 to 10 V

0.10% of FS

+ 1/2 LSD

0.30% of FS

+ 1/2 LSD

10k ohm min.

1/3500

0 to 20 mA

0.10% of FS

+ 1/2 LSD

0.30% of FS

+ 1/2 LSD

500 ohm max.

1/3500

4 to 20 mA

0.10% of FS

+ 1/2 LSD

0.30% of FS

+ 1/2 LSD

500 ohm max.

1/2800

* Accuracies are expressed as

percentages after 20 minutes warm-up. Output

accuracy is specified in two ways: Accuracy over an 18 to 28°C range at 10

to 75% RH environment; and accuracy over a 0 to 50°C range at 0 to 85%

RH (non-condensing) environment. Accuracy over the wide sensor range

reflects the coeffecient of the internal circuitry.

** Outputs are independently jumper selectable for either 10 V or 20 mA. The

output range may be field calibrated to yield approximately 10% overrange

and a small underrange (negative) signal.

13. REMOTE SETPOINT INPUT: (optional)

Input type: 0/4 to 20 mA

Input Resistance: 10



Overrange: -5% to 105%

Overload: 100 mA (continuous)

Scale Range: -999 to 9999

Resolution: 1 part in 10,000.

Accuracy:

At 25

Over 0 to 50

Reading Rate: 10/sec.

Setpoint Filtering: Programmable Digital

Setpoint Ramping: Programmable, 1 to 9999 units/minute.

14. SERIAL COMMUNICATIONS: (optional)

Type: RS485 multipoint, balanced interface

Baud Rate: 300 to 9600

Data Format: 7O1, 7E1, 7N2, 8N1

Node Address: 0 to 99, max of 32 units per line

Transmit Delay: 2 to 100 msec or 100 to 200 msec

Data Encoding: ASCII

Isolation w.r.t Main Input Common: 500 Vrms for 1 min. (50 V working)

Not isolated w.r.t. Remote Setpoint or Analog Output common

Note: RS485 and the Analog Output commons are not internally isolated

within the controller. The terminating equipment of these outputs must not

share the same common (ie. earth ground).

15. ENVIRONMENTAL CONDITIONS:

Operating Range: 0 to 50°C

Storage Range: -40 to 80°C

Operating and Storage Humidity:

85% max. relative humidity (non-condensing) from 0°C to 50°C.

Vibration According to IEC 68-2-6: Operational 5 to 150 Hz, in X, Y, Z

direction for 1.5 hours, 2 g.

Shock According to IEC 68-2-27: Operational 20 g (10 g relay), 11 msec

in 3 directions.

Altitude: Up to 2000 meters

Absolute high acting

Absolute low acting

Deviation high acting

Deviation low acting

Inside band acting

Outside band acting

INPUT

RANGE

ACCURACY *

(0 to 50°C)

IMPEDANCE

RESOLUTION

10 VDC

(-1 to 11)

0.30% of

reading

+0.03 V

1 M ohm

300 V

10 mV

20 mA DC

(-2 to 22)

0.30% of

reading

+0.04 mA

10 ohm

100 mA

10 μA

ACCURACY *

(18 to 28°C)

MAX

CONTINUOUS

OVERLOAD

0.10% of

reading

+0.02 V

0.10% of

reading

+0.03 mA