UNITED PROCESS CONTROLS GMBH
Page 2
Protherm 50 P68.230
Introduction
PT50 is a measurement and control system for heat-treatment-installations. The device is suitable for
the connection of an O2-probe and offers the following features:
Local operation by good readable display and press/turn knob, which reaction can be adopted
to the personal wishes of the operator
local language online selectable between German/English/French
access protected by two separate password levels for setpoints and configuration.
The menus for operation and configuration are individually selectable by the service-software.
operating voltage: 24VDC.
DIN-cabinet 96x96 with clips and pluggable connections enables exchange without opening the
switch-cabinet.
Measurement of thermo-voltage and e.m.f. of an O2-probe and calculation of the temperature
TC1 for the thermo-elements PtRh10 (S), PtRh13 (R), (Pt13Rh6(B), from O2-partial pressure,
carbon-potential Cp, carbon-activity aC, KC-value, water-content H2O, nitriding values KN, dew
point TP and carbon-potentials Cpl with usage of a Lambda probe.
Measurement a second thermo-voltage and calculation of the temperature TC2 for the thermo-
elements PtRh10 (S), PtRh13 (R), (Pt13Rh6(B), NiCrNi (K), NiCrSi (N) and FeCo (J).
Regulation the furnace-atmosphere, (control variable Cp, KC, O2, LogO2, KN, TP and Cpl) by
means of PID-controller with Autoident-function and two local set points.
Regulation of TC1 or TC2 by means of PID-controller with Autoident-function and two local set-
points.
Automatic calculation of the Cp-correction factor from a foil-value.
Integrated purging automatic for O2-probe.
Versatile limit-functions with classification in warning- or alarm-messages. Warnings will be de-
leted with disappearance of the cause automatically. Alarms has to be acknowledged.
5 relay outputs and 3 digital inputs are standard. Inputs and output signals can be assigned to
the functions freely.
CAN-Bus-Interface for IO- extension is standard.
Optional MODBUS Interface or PROFIBUS-DP for connection to a process-leading system or
PLC.
Possible system-extension with CANOpen-compatible IO-modules. 4 analog inputs, 4 analog
outputs, 16 digital inputs and 16 digital outputs can be used additionally. Outputs and inputs can
be assigned to the functions freely.
Comfortable parameterization and configuration of the device by means of PC through built-in
service-interface. The entire configuration can be uploaded, archived and downloaded. The PC-
Software necessary for this runs under Win98/NT/2000/XP and offers diverse tools for configu-
ration, start-up, diagnosis and services.
The appliance-software can be updated without opening the casing.
Operating mode: Remote or Local
PT50 can operate in two modes:
Operating
mode
Function
Remote
The regulators work with remote-setpoints, which are send by a process leading system
over one of the interfaces. The local setting of a setpoint is not possible.
Local
The regulators work with the local setpoints. The process leadings system is able to read
the actual setpoint values, the remote setpoints will be accepted by the controller but will
be ignored.
The selection of the operating modes can be done manually, by a digital input or by process leading
system. (exception: PROFIBUS, here the PLC can read the operating mode, but cannot change it.)
