Operating Instructions for
Temperature Controller ELT-GP1
Page 5 of 10
2.2 Terminals: Explanation
Mains connection for the unit (phase conductor).
Second "L" terminal. Possible use: The heater is to be connected directly to the unit. In this case: Jumper from
2 to 7.
Mains connection for the unit (neutral conductor).
Second "N" terminal. Possible use: The heater is to be connected directly to the unit. In this case:
A) Without using the second load relay K2 (normal case): Connect the heater at terminals 4 and 8.
B) With use of the second load relay K2 (e.g. for BeNeLux countries): jumper from 4 to 9 and connection of the
heater at terminals 8 and 10.
Mains protective conductor.
Second "PE" terminal, e.g. for connecting the protective conductor for the heater.
Contacts 7 + 8 as normally open contacts. Input of load relay K1, max. 16A / 230VAC. Phase connection from
mains.
Contacts 7 + 8 as normally open contacts. Output of load relay K1, max. 16 A / 230VAC. Phase connection of
heater.
Contacts 7 + 8 as normally closed contacts, max. 16 A / 230VAC. Open when the preset high temperature limit
is exceeded (High Limit).
Optional, if the phase and neutral conductors are to be switched (e.g. BeNeLux countries): Contacts 9 + 10 as
normally open contacts. Input of load relay K2, max. 16 A / 230VAC. Neutral conductor from mains.
Optional, (see above). Contacts 9 and 10 as normally open contacts. Output of load relay, max. 16 A / 230VAC.
Neutral conductor of the heater.
9,10 (PID-PWM)
(PID-cont.)
Optional, see: 7,8 (PID-PWM)
(PID-continuous)
Optional. Contacts 11 + 12 as normally closed contacts, max. 8 A / 230VAC. Open in case of probe breakage or
probe short (in the case of a Pt100) and for probe interruption (in the case of a thermocouple). Also open
when the preset high temperature limit is exceeded or the preset low temperature limit is not reached.
Optional. Contacts 13 and 14 as normally open contacts, max. 8 A / 230VAC. Close when the preset high
temperature limit is exceeded (High Limit).
SSR-output, 12V, max. 30 mA for connection of a solid state relay for heater ON / OFF.
SSR-output, as PWM (Pulse-Width-Modulation) -signal, 12V, max. 30 mA for connection of a solid state relay
17 (2-position)
(PID-PWM)
Optional. Electrically isolated analogue output, Voltage: 0 - 10V (between terminals 17 and 19), proportional
to the actual temperature, referred to the preset control range, Max.power: 250 mW.
position)
Optional. Electrically isolated analogue output, current drain: 0 - 20mA (between terminals 18 and 19),
proportional to the actual temperature, referred to the preset control range. Max. output: 250 mW.
Optional. Electrically isolated analogue output as manipulated variable, Voltage: 0 - 10V (between terminals 17
and 19). 5V would e.g. correspond to half power.
Optional. Electrically isolated analogue output as manipulated variable, current drain:
0 - 20mA (between terminals 18 and 19). 10mA would e.g. correspond to half power.
Common reference potential for terminals 17 and 18.
Electrically isolated bus interface. Pay attention to polarity to avoid communication error.
22
E1
Optional. Electrically isolated digital input, voltage: 10 - 30VDC (at terminals 22 and 24) Function: External
controller enable:
If voltage is present: controller is in automatic mode. If no voltage is present: controller is in standby mode (i.e.
heater is not being supplied with current, it is just being monitored).
Common reference potential for terminals 22 and 23.
Pt100 , two-wire system: terminals 26 and 27, jumper between 25 and 26 and between 27 and 28.
Pt100 , three-wire system: jumper between 25 and 26, left connection to 26, right pair to 27 and 28.
Pt100 , four-wire system: left pair to 25 and 26, right pair to 27 and 28.
Thermocouple, type J or K: terminals 26 (+) and 28 (-).
Set-point input, voltage: 0 - 10VDC. Function: External set-point adjustment. The applied voltage must be
proportional to the temperature set-point (target temperature), referred to the preset control range.
Table 1
To Next Page
Loading...
Need help?
General