PPT245
DIN-Rail Mounted Multifunction Indicator/Controller
The PPT245 DIN-rail mounted controller provides
a highly versatile alternative to panel-mounted
instruments. It has one analogue input which is
configurable for up to 18 different sensors/signals,
two relay outputs, and a third output which can
be configured either as a SSR logic signal or a 4
to 20mA /0 to 10V analogue signal for control or
re-scalable retransmission of the process variable
or setpoint.
The analogue output can also be used to adjust
the emissivity setting on a PyroEpsilon noncontact
temperature sensor – the value is adjusted
between 0.2 and 1.0 using the lower (red) LED
display and associated push buttons.
The built-in switching power supply has an
extended range of 24 to 230VAC/DC and does
not require any jumper setting. The control
modes are ON/OFF, PID + Autotuning and
Heating/Cooling PID with a neutral zone.
Software features include launch tuning, setpoint
selection via digital input, optional manual reset
of the output via the front keypad, latch-on
function for sensor calibration (including load
cells) and a programmable cycle of 3 steps.
RS485 serial communication (Modbus RTU) and
load monitoring function (Loop Break Alarm) with
current transformer TA are also provided.
• Metalworking furnaces
• Heating element control
• Footwear machinery
• Plastic extrusion
• Injection moulding
• Motorised valve control
• Woodworking machinery
• Pharmaceutical industry
• Current control
• Remote control via RS485
• Signal converter
General Specifications
Housing DIN 43880 for mounting on type EN 50022 rail or on a
flat surface
Supply Voltage 24 to 230VAC/DC +/- 15% 50/60Hz
Power Consumption 3W
Display 4-digit dual LED, 8 red status LEDs
Operating Conditions 0-45°C, 35-95%RH
Inputs 1 configurable for J, K, R or S thermocouples; Pt100;
Ni100; Pt1000; Pt500; PTC1k; NTC10k; 0 to 10V; 0/4
to 20mA; 0 to 40mV; potentiometer 6kÙ / 150kÙ; TA
50mA.
Outputs 2 relays 5A resistive + 1 logic SSR 12V-30mA / 4
to 20mA / 0 to10V for control or retransmission,
galvanically isolated from input and power supply
RS485 Modbus RTU (57600 baud max)
Input TA 50mA for Loop Break Alarm
Digital Input Tuning start, Setpoint change, Man/Auto selection,
Hold function, Start/Stop preprogrammed cycle
Control Modes ON/OFF, P, PI, PID, Autotuning
Accuracy 0.5%±1digit for TC/RTD; 0.2%±1digit for V/mA
Sampling Time Selectable (15ms max)
Sealing IP20
Configuration Parameters protected by password; optional memory
card with battery for repeat configurations; LabSoftView
software for configuration via a PC
Optional Enclosure Polycarbonate with transparent lid, IP65,
160H x 90W x 90D mm