Full Gauge PCT-120E plus Manual

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1. DESCRIPTION

The PCT-120e plus is an easy to install and operate two-stage pressure controller designed for
systems that require effective pressure control. Operating in pressurization, despressurization,
refrigeration, heating or alarm mode, it directly controls loads of up to 1HP. It also has digital inputs that
allow external devices to be used for protecting the controller system, hourmeters that store the number
of hours compressors/pumps are operating and indicate when maintanance should be performed on
them. Operating in combination with temperature sensors, it also performs dynamic and adiabatic
condensation control, dynamic evaporation, superheating and subcooling monitoring, promoting
greater energy efficiency in the system. It also has serial output for communication with Sitrad and an
intelligent locking function, preventing unauthorized persons from changing the control parameters.

2. APPLICATIONS

Control over suction or discharge in refrigeration systems, air compressors, semi-artesian pumps,
•
Water Tanks and filters, superheating and subcooling monitoring.

3. TECHNICAL SPECIFICATIONS

PCT-120E Plus:
Power supply
PCT-120EL Plus 12Vac/dc:
PCT-120EL Plus 24Vac/dc:
Pressure control range
Temperature control range
Water level control range
Approximate consumption
Sensors available for acquisition
Pressure resolution
Temperature resolution
Water level resolution
Operating temperature
Maximum current
Operating humidity
Digital Inputs
Protection level
Product dimensions
Dimensions of the clip for fixing the instrument

4. INDICATORS AND KEYS

Led indicator (output 2 on/off)
Led indicator (output 1 on/off)
Quick Access
Menu key 2
Set key
e plus
PCT-120

5.1 INSTALLATION - ELECTRIC CONNECTIONS

SITRAD
GND
P1 P2
E l e c t r i c a l c o n n e c t i o n o f
temperature sensors/digital inputs:
D1/T1: Pins 4-8
D2/T2: Pins 7-8
PCT-120
DIGITAL PRESSURE CONTROLLER
AND INDICATOR
Functions Control Serial
Lock Functions Programming
Shutdown
90~240Vac (50/60 Hz)
12Vac/dc 10% (50/60 Hz)
24Vac/dc 10% (50/60 Hz)
-14 to 850 psi / -1 to 58.6 bar (configurable sensor
operating range)
-50 to 200°C / -58 to 392°F
0 to 250 mwc (configurable sensor operating range)
±
4VA
SB69 - 100A* (0 a 100 psi / 0 a 6,9 bar)
SB69 - 200A* (0 a 200 psi / 0 a 13,8 bar)
SB69 - 500A* (0 a 500 psi / 0 a 34,4 bar)
SB69 - 850A* (0 a 850 psi / 0 a 58,7 bar)
SB70* - (-50 a 105°C / -58 a 221°F)
SB59* - (-50 a 200°C / -58 a 392°F)
*Sensors sold separately
1 psi / 0,1 bar
0,1°C / 1°F
0,1 mca
0 to 60°C / 32 to 140°F
OUT1: 16A / 1HP 250Vac
OUT2: 16A / 1HP 250Vac
10 to 90% UR (no condensation)
Configurable dry contact
IP 65 (frontal)
76 x 34 x 77 mm (W x H x D) (2,99 x 1,33 x 3,03'')
± ±
71 0,5 x 29 0,5 mm (2,80 x 0,01 x 1,14 x 0,01'')
Water level unit indication LED (mwc)
Temperature unit indication LED
Led indicator (pressure units: psi/bar)
m
P B
Upper key
Lower key
90~240 Vac Connection
e plus
PCT-120
16A 1HP 16A 1HP
Electrical connection of pressure
sensors:
Brown: 12Vdc
Green or White: 4~20mA
e plus
IP 65
FRONT
Supervisory
Hourmeter
Protection
System
Level

5. INSTALLATIONS - PANEL AND ELECTRIC CONNECTIONS

WARNING
FOR INSTALLATIONS THAT REQUIRE WATER TIGHTNESS, THE OPENING TO INSTALL THE CONTROLLER MUST BE 71,5 x 29,5 mm
(28,15 x 11,6 in) MAXIMUM. THE SIDE LATCHES MUST BE FIXED SO THAT THEY PRESS THE SEALING GASKET TO PREVENT
INFILTRATION BETWEEN THE OPENING AND THE CONTROLLER.
IMPORTANT
IT IS ESSENTIAL TO USE THE CORRECT TOOLS IN ORDER TO AVOID DAMAGES TO THE INSTRUMENT'S CONNECTION
TERMINALS:
3/32''(2.4mm) SLOTTED SCREWDRIVER FOR ADJUSTMENTS IN THE SIGNAL TERMINALS;
PHILLIPS SCREWDRIVER

6. OPERATIONS

6.1 Quick Access Menu Map

To access or browse the quick access menu, use the ;key (quick touch) while the controller is displaying the pressure.
Each touch displays the next function in the list ; to confirm, use the /key (quick touch).
SELECT FUNCTION
;
ADJUST FOR REQUIRED
PRESSURE (SETPOINT)
;
ADJUST FOR REQUIRED
DIFFERENTIAL (HISTERESE)
;
VIEW HOUR METER
;
90~240Vac
e plu s e plu s
PC T- 12 0 PC T- 12 0
Panel
(Side view)
#1 FOR ADJUSTMENTS AT THE POWER TERMINALS.
RESET HOUR METER
;
12 Vac/dc Connection
el
SITRAD
PCT-120 plus 12v
GND
16A 1HP
12Vac/dc
P1 P2
24 Vac/dc Connection
SITRAD
el
PCT-120 plus 24v
GND
16A 1HP
24Vac/dc
P1 P2
evolution
71 ± 0,5 mm
Dimensions of the clip
for fixing the instrument
Panel (Front view)
EXIT FUNCTION
;
RESET THE SYSTEM
;
CONTROL FUNCTIONS
(ON/OFF)
;
FUNCTION LOCK
;
16A 1HP
Power supply
16A 1HP
Power supply