eltherm ELT-GP1, Документация

Страница: 6 / 14

BU-020 Operating Instructions for
Temperature Controller ELT-GP1
Revision 4 20.12.2018
Page 5 of 10
2.2 Terminals: Explanation
Terminal No. Name Meaning
1 L Mains connection for the unit (phase conductor).
2 L Second "L" terminal. Possible use: The heater is to be connected directly to the unit. In this case: Jumper from
2 to 7.
3 N Mains connection for the unit (neutral conductor).
4 N 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.
5 PE Mains protective conductor.
6 PE Second "PE" terminal, e.g. for connecting the protective conductor for the heater.
7 (2-position) K1 Contacts 7 + 8 as normally open contacts. Input of load relay K1, max. 16A / 230VAC. Phase connection from
mains.
8 (2-position) K1 Contacts 7 + 8 as normally open contacts. Output of load relay K1, max. 16 A / 230VAC. Phase connection of
heater.
7,8(PID-PWM)
(PID-cont.)
K1 Contacts 7 + 8 as normally closed contacts, max. 16 A / 230VAC. Open when the preset high temperature limit
is exceeded (High Limit).
9 (2-position) K2 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.
10 (2-position) K2 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.)
K2 Optional , see: 7,8 (PID-PWM)
(PID-continuous)
11, 12 K3 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.
13, 14 K4 Optional . Contacts 13 and 14 as normally open contacts, max. 8 A / 230VAC. Close when the preset high
temperature limit is exceeded (High Limit).
15,16(2-
position)
+, - SSR-output, 12V, max. 30 mA for connection of a solid state relay for heater ON / OFF.
15, 16 (PID-
PWM)
+, - SSR-output, as PWM (Pulse-Width-Modulation) -signal, 12V, max. 30 mA for connection of a solid state relay
15, 16 (PID-
cont.)
+, - not used.
17 (2-position)
(PID-PWM)
U 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.
18 (2-
position)
(PID-PWM)
I 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.
17 (PID-cont.) U Optional . Electrically isolated analogue output as manipulated variable, Voltage: 0 - 10V (between terminals 17
and 19). 5V would e.g. correspond to half power.
18 (PID-cont.) I 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.
19 G Common reference potential for terminals 17 and 18.
20 + Electrically isolated bus interface. Pay attention to polarity to avoid communication error.
21 - see above
22
Digital In
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).
23 Digital In
E2
No function at present.
24 G Common reference potential for terminals 22 and 23.
25 + Pt100 , two-wire system: terminals 26 and 27, jumper between 25 and 26 and between 27 and 28.
26 + Pt100 , three-wire system: jumper between 25 and 26, left connection to 26, right pair to 27 and 28.
27 - Pt100 , four-wire system: left pair to 25 and 26, right pair to 27 and 28.
28 - Thermocouple, type J or K: terminals 26 (+) and 28 (-).
29, 30 +, - 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