Controller functions
Version 1
RES-407
Page 31
The "OUTPUT" LED blinks repeatedly when the "AUTOCOMP" function is executed and the actual value
output (terminals 17+14) is set to 0…3°C (i.e. app. 0 VDC).
7.9
Temperature diagnosis (as of April 2005)
An additional temperature diagnosis can be activated in the ROPEX visualization software (
nostic interface/visualization software (as of April 2005)" on page 33). The RES-407 checks whether the ACTUAL
temperature is within a settable tolerance band ("OK" window) on either side of the SET temperature. The lower
(
) and upper (
) tolerance band limits are configured in the factory to -10K and +10K. These
values can be set independently of one another in the ROPEX visualization software.
If the actual temperature is inside the specified tolerance band when the "START" signal is activated, the temper-
ature diagnosis is activated as well. If the ACTUAL temperature leaves the tolerance band, the corresponding error
code (307 or 308) is indicated and the alarm output is switched (
section 7.13 "Error messages" on page 34).
Function
AUTOCAL
signal
„AC“
t
t
0
0
AUTOCAL
AUTOCOMP
lit
t
OFF
„AUTOCAL“
t
OFF
LED
lit
„OUTPUT“
LED
24VDC
Δϑ
lower
Δϑ
upper