4 pmg511en21p01
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1. INTRODUCTION
In addition to the 1/16 DIN
(48 x 48 mm)
design, the UNICONT PM universal controller family is characterized by
easy setpoint adjustment and easy programming. The universal analog PID controller is suitable for processing
signals from Pt100 resistance thermometers, various thermocouples, and transmitters with a 4…20 mA
and 0…10 V DC, 0…5 V DC, 1…5 V DC, 0…100
mV
DC signal. The control output can be a relay, a continuous
0…20 mA or 4…20 mA current signal, or an output suitable for operating an SSR
(solid-state relay)
. The self-
learning autotuning
(AT)
mode helps users determine PID parameters. The device provides automatic wire
compensation for the Pt100 input signal and automatic cold junction compensation for the thermocouple input
signal. Some PM–500 series members are also capable of RS485 communication.
The UNICONT PM–500 enables more efficient control with a super-fast 50 ms sampling cycle and ±0.3% display
accuracy. Moreover, it supports a variety of control modes, including simultaneous control of heating and cooling
and automatic/manual control and communication functions.
2. SPECIFICATIONS
2.1 GENERAL DATA
PMG–500
Power
supply
AC
100…240 V AC, 50/60 Hz, 8 VA
AC/DC
24 V AC 50/60 Hz, 8 VA or 24…48 V DC, 5 W
Voltage tolerance
±10% deviance from nominal voltage
Ambient temperature
–10…+50 °C
Ambient humidity
35...85% RH
Display
Process Value (PV): 7-segment, red, 7.0 × 14.0 mm,
Set Value (SV): 7-segment, green, 5.0 × 10.0 mm
Status LEDs with labels
Primary
input
RTD mode
Compatible resistance temperature sensors: JPt 100Ω, DPt 100Ω, DPt 50Ω,
Cu 100 Ω, Cu 50 Ω, and Nikel 120 Ω
TC mode
Compatible thermocouple sensors: K, J, E, T, L, N, U, R, S, B, C, G, and PLII
Analog mode
Voltage: 0…100 mV, 0…5V, 1…5 V, and 0…10 V
Current: 0…20 mA and 4…20 mA
Optional
inputs
CT input
0…50 mA (for external 1/1000 CT connection)
Digital input (DI)
Active input for passive switches, measuring current: 0.5 mA / 5 V
Contact switch – sensing threshold: ’On’ < 2 kΩ / ’Off’ > 90 kΩ
Transistor switch – sensing threshold: ’On’ < 1.0 V DC / ’Off’ < 0.1 mA
Display
accuracy
RTD mode
Room temperature (23 °C ±5 °C): (PV ±0.3% or ±1 °C) ±1 digit
Full ambient-temperature range: (PV ±0.5% or ±2 °C) ±1 digit
TC mode
Analog mode
Room temperature (23 °C ±5 °C): ±0.3% F.S. ±1 digit
Full ambient-temperature range: ±0.5% F.S. ±1 digit
CT input
±5% F.S. ±1 digit
Control
outputs
Relay (OUT1 / 2)
250 V / 3 A AC-1
SSR (OUT2)
11 V DC ±2 V / 20 mA
Current (OUT2)
4…20 mA or 0…20 mA selectable (max. loop resistance 500 Ω)
Alarm output
Relay (AL1)
250 V / 3
A AC-1