MK (E3) 07/2009
page 44/70
11.3 Over/under temperature safety device class 2 (option)
The over-/under temperature safety device (6) consists of two entry
modules located in the lateral control panel. Both modules can be
set from -50°C /
-58°F
up to 200°C /
392°F
and serve to define the
maximum high and low temperature limits.
With this option, the safety controller (chap. 11.2) must be
set to maximum temperature.
(6a) Upper module: Entry of higher limit temperature.
(6b) Lower module: Entry of lower limit temperature.
When the temperature inside the chamber leaves this tolerance
bandwidth, the temperature control, and herewith the heating and
refrigeration, are switched off permanently.
At the corresponding entry module, the red pilot lamp K1 lights up
(K2 is without function).
The controller displays the alarm message „TEMP CLASS“. Addi-
tionally there is an audible alert, provided that the buzzer has not
been deactivated in menu “User level”. In the graphical representa-
tion, the blue line “CLASS” is displayed enlarged (chap. 7).
Let the chamber heat up or cool down to the defined safety tempera-
ture range.
The press down RESET button (5) “RESET CL 2.0” located in the
lateral control panel to re-activate the chamber. The red pilot lamp
K1 goes off.
Then reset the alarm message at the controller display by controller
button RESET (see chap. 12).
P
K2
K1
Setting limit temperatures at modules (6a) and (6b):
•
Press down button P
•
The display changes to entry mode
•
Enter the desired limit temperature via the arrow keys
•
The entered temperature value is adopted after a few
seconds. The display shows the actual temperature
again.
OUTPUT TRACK 2+3
24V/MAX.2,5A
OUTPUT TRACK 4+5
24V/MAX.2,5A
OUTPUT TEMP.
X + W 4-20mA
ETHERNET
RESET CL. 2.0
ON
OFF
RS422
SERVICE
ONLY
Summary of Contents for 9020-0146
Page 65: ...MK E3 07 2009 page 65 70 18 9 Dimensions MK 115 ...
Page 71: ......
