MG TR-EVO, Instructions For Use Manual, Page: 13 / 24

Start-up
On first start-up, the equipment will probably give an error signal.
This signal is normal and depends on the fact the parameters of the
heating element have not been registered yet. For the temperature
controller to acquire these parameters, the Tuning procedure must
be activated which should always be executed after replacing the
heating element.
The tuning procedure enables the temperature controller to acquire the cold resistance value of
the heating element and starts with the specific sequence indicated in the programming chapter or
from remote via interface 485. At the end of the procedure, the temperature controller will start
working properly again or blocks, displaying an error that indicates the reason the procedure did
not conclude properly.
Always execute the tuning procedure with the heating element at
room temperature.
On switch on, the temperature controller prepares for operation by synchronising with the mains
frequency and displaying it on the numerical display, (
F 50
for 50Hz) .
Once synchronised, the temperature controller goes to "standby" mode and displays
the temperature read on the heating element. To read the temperature, the power
output is briefly activated at a fixed rate, allowing the device to continuously control
the load status and promptly signal any anomalies. If the device detects anomalies in
its operation, it blocks and signals the type of anomaly on the display and activates a
signal output.
In standby mode, the equipment does not adjust the temperature and displays the
temperature read on the heating element. Heating starts if the pre-heating and/or
START input are activated. These commands can also be serially activated, however
the response time is not guaranteed therefore you are not advised to use them in
situations where the response time is important.
The operating status of the temperature controller is indicated on the leds on the left of the second
row of the display. The first led on top indicates heating has started by applying voltage to the
START input, however the temperature has not yet reached the value set or start of heating cicle
delay timer(td) is still active. When the temperature reaches the working value, the central led
switches on as long as the START input is active or until the pulse timer(to) expires. Lastly, the
bottom led switches on when heating has concluded, however the heating element has not yet
cooled down or cooling timer has not yet expired.
The working temperature can be set using external voltage controlled by a
potentiometer or an analogue output, using the serial interface, or directly from the
keypad on the display. To set the working temperature, press the
≡
key to display
the temperature, indicated by the abbreviation
ht
on the lower display, and press the
and keys to edit the value.
11
030
173
173
ht