Vemer FHT Series User Manual page 13

(which occurs automatically if no key is pressed for at least 40 s). To switch from
parameter label reading to the reading of the relevant numeric value, press the "OK"
key.
To change a parameter:
- from label or value reading, hold the "OK" key pressed for at least three seconds.
- the display will begin to fl ash the parameter value.
- use the "up" (▲) and "down" (▼) keys respectively to increase or decrease said
value.
- press the "OK" key to confi rm the change and exit (the display will stop
fl ashing).
Note: if no key is pressed within 40 seconds, the device will quit parameter
confi guration and no changes will be stored.
During the display and change of parameters the device will continue
operating with the previous settings.
If "password 1" is enabled (access password for the protection of settings - see
system menu), the display will read "- - - " when the "OK" key is pressed from
normal status.
To proceed with parameter confi guration, enter the previously set password (a
numeric value from 0 to 255) using the "up" (▲) and "down" (▼) keys and then
press "OK" to confi rm.
If the password entered is correct the regulation menu will appear; otherwise normal
status will return.
Advanced programming
To enter advanced programming from normal status, press the "up" (▲) and
"down" (▼) keys simultaneously for at least 3 seconds.
Note: to restore factory-set default values, turn on the device while
pressing the "OK" key.
These parameters are classifi ed by type into nine menus:
1) Regulation (indicated by label [REG]): set-point, differential, dead band
2) Output (indicated by label [OUT]): timing of output activation, timing of
PWM cycle
3) Digital input (indicated by the label [ING]): function, delay time
4) Alarm (indicated by label [ALR]): probe alarm output status, minimum/maximum
shift, differential, delay time, buzzer on/off
5) Display (indicated by label [DSP]): set-point limits, probe offset, resolution,
measurement unit, reading fi lter
6) Sensor (indicated by label [SNS]): sensor type, sensor parameters
7) System (indicated by label [SYS]): password, change enabling, operating mode
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User Manual – Thermoregulator FHT