Operating - gefran 400 User Manual

We deliver our temperature regulator in its basic adjustment for the control of heaters. For other applications, the
parameters should be accordingly modified with the help of the attached operating instruction.
1. Link: There is a link for the thermocouple (NiCr Ni, type K) on the front plate. Laterally, heaters can be
steered through the automatic controller. The permissible power for each power connection amounts to 5 A
with 230 ~V. Attention the output is only for resistive load!
2. Display: The temperature (actual value) measured at the thermocouple is displayed. Heater switching
impulses (220 V at the plug sockets) are displayed by a red LED down/up OUT 2. If the actual value is
below the set point, this is displayed by a red LED arrow directing to the left (LOW); if the actual value
exceeds the set point, this is indicated by a red LED arrow directing right (HIGH) OUT 2 turn off; no 220 V
at the plug sockets). If the actual value is within the range of tolerance of the set point, a green beam-LED
lights up.
3. Temperature adjustment: Through pressing key >F< on the front plate „-SP" appears, alternating with the
set point actually given. With the arrow keys > v / ^ < the desired set point can be set. After the
modification press key >F< again to transfer the new set point (display: > AL.1<). After 5 seconds the
instrument switches back into the initial state and the modified set point is taken over. If the desired value is
modified and there is no acknowledgement by key >F< after 5 seconds, the instrument again switches back
into the initial state, but the set point is reduced to the lower alarm value. By pressing key >F< second time
(next of the set point), further values such as alarm value 1 and 2 (optionally) and the placing degrees (not
by automatic, only by manual) can be called up. Note: if key >F< is initially pressed longer than 2 seconds,
you achieve a level on which there is the danger of an unintentional change of the functional parameters.
4. Temperature control: Thermocouple NiCr Ni type K, without self-optimization and auto optimization,
proportional temperature control, with soft start function (note: heating regulates the full heating power after
approximately 3-5 minutes; in any case soft start for the protection of the heating cartridge).
Important adjustments for modifications of the temperature control:
Blocked: Pass: 99 (protection: 28)
by parameter CFG (press >F< key for 2 seconds, press twice afterwards, CFG appears)
S.tu: Adjustment whether working with optimization (see instruction)
h.Pb: Value of heating in proportion to the final value of the thermocouple; i.e. the regulation starts 1 % of
the thermocouple's final value below the set point. Example: adjustment: 1,0, thermocouple type K: 1300°C
= 1 % = 13 °C, set point: 500 °C; this means that the temperature control is started at 487°C.
h.It: the smaller the value, the more an adaptation value to the set point is attempted. If the value is small,
there is the danger of over swing.
h.dt: the larger the value, the more an over swing is prevented; this affects a dampening of the controlling
action. The relation of the values h.It to h.dt should always be 4:1.
5. Manual regulation: Through pressing key > O < you can choose between automatic and manual operation.
In case of manual operation the instrument is only used as a momentum generator and there is no need for a
thermocouple (important when sensor breaks). After reversing, all LED light up and the position can be
chosen. Value 100 means constant heating, value 50 means that the processes of turning on and turning off
take equally long. The clock speed is entered. A set point is not considered. The temperature and the set
value are displayed alternately. Change over to the automatic mode by pressing key > O <.
6. Turning on/Turning off: The instrument can be turned on and off by plucking in the power supply plug or
pulling it off. Furthermore, there is the possibility of turning the instrument off while it is connected with the
voltage supply. Therefore, key >F< and key > ^ < have to be pressed at the same time and for 5 seconds.
After turning the instrument off, only a decimal point can be seen. The instrument is turned on by pressing
key >F< for 5 seconds.
7. Alarm outputs: Optionally the instrument can also be delivered with a socket for alarm outputs. The contact
is closed by alarm (alarm 1, 2 and sensor breaks).
8. A fuse is installed inside as protection, if the current is more than 5 amperes. Attention: The relay can
switch only resistive load (ohm-resistance)! Don't regulate transformer and systems with more as 5
amperes. Working temperature: -10 to +40°C
We recommend the adjustment with auto- and self-optimization respectively; for further information please see
attached instruction.
Short Operating Instruction
for temperature regulator 400
Paul-Gothe-GmbH V.45/05/NCN
t regler-nicrni-3.doc