Publicité
If both functions have been started, the display of function
„Heating" always has preference. If in this case the speed is chan-
ged via rotary knob „Mot" (not possible in C -mode of operation),
the display reverses to speed display for a duration of 5 seconds.
The mode of the display can also be changed by pressing foil key
„Mode" once. After 5 seconds the display shifts back to tempe-
rature display.
If function „Heating" is switched off, and if the heating plate tem-
perature is higher than 50 °C, LED „Temp" will be blinking green
(20% ON ... 80% OFF).
The digital display
changes constantly
from rated tempe-
rature °C
to rated temperature
HOT
8
Switching on
The instrument is switched on by the mains switch on the left side
of the instrument (see fig. 1).
A self test cycle for all the safety functions is run and a recogniti-
on cycle of the temperature sensors connected up is also run.
• The "Temp" and "Mot" LEDs and the LCD display segments
flash for approximately 2 seconds.
• The software version number (e.g. "V000") is displayed.
• The status of the intermittent mode (On/OFF Intermit) and the
stirring bar breakaway monitoring (On/OFF SAFE rpm) functi-
ons are displayed.
• The message TEST Probe is displayed.
• The operating mode (A, B or C) is displayed.
30
• The temperature sensors connected up and identified are dis-
played:
PT OFF
No external temperature sensor connected up.
PT2 OFF
PT100 (single)
PT2 On
2x PT1000
• The safe temperature limit of the heating plate is displayed as
SAFE H xxx °C (SV flashes).
• SAFE H OK is displayed.
• If external temperature sensors (PT 100 or PT 1000) are con-
nected up, their safe temperature limit is displayed as SAFE P
xxx °C (SV flashes).
• The message SAFE P OK is displayed.
9
Factory settings
The RET control / t is supplied with the following factory settings:
Operating mode
A
Setpoint temperature
0
SAFE H
350 °C
SAFE P
350 °C
Setpoint speed
50
Intermittent stirring mode
OFF
Cycle time (at setpoint speed)
60
Interruption (at 50 rpm)
10
Stirring bar breakaway monitoring
Error 5 response time
180 sec. (*)
PT 100 temperature sensor
0
offset
PT 1000 1 temperature sensor 0
offset
PT 1000 2 temperature sensor 0
offset
Timer
(* = can only be modified via serial interface)
°C
rpm
sec. (*)
sec. (*)
OFF
K
(*)
K
(*)
K
(*)
OFF
022009
Publicité
Chapitres
