1592038420 XRB30-60-70-77CH EN v1.1 2021.09.15
XRB
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6.
PROG-KEY
During 30 after a power on it will be possible to upgrade the internal firmware by using a special tool named
PROG-KEY. This operation does not change the internal parameter configuration.
6.1 UPDATE FW
After power-on, and when alarm icon is flashing:
-
Insert the PROG-KEY into the HOT-KEY port.
-
Keep DOWN button pressed for 3 sec.
-
The FW update will start (the display will show the
label “ΓΓΓ”).
At the end of the programming phase:
-
The message “Err” is displayed in case of a failed FW update.
-
The message “End” is displayed in case of successful FW update.
-
Remove the PROG-KEY and press DOWN button to reboot the controller.
6.2 IMPORTANT NOTES
-
PAY ATTENTION:
this operation MUST be carried out only from expert personnel to avoid damaging
the controller. Please contact your regional reseller to have more information.
-
Never switch off the controller during FW update.
-
Disconnect all loads before updating the controller to avoid unpredictable output activations.
-
After any FW UPDATE, the parameter maps must be updated.
7.
PARAMETER TABLE
The controller has an internal memory where are stored a couple of complete parameter maps, normally
indicated as “
nt
” and “
Lt
”.
It will be possible to reload values for “
nt
” or “
Lt
” parameters map by using:
-
Any button set as “
Lnt
”.
-
Modbus command
-
Digital input set as “
Lnt
”.
7.1 PARAMETER DESCRIPTION
Here are the descriptions of the device parameters.
7.1.1 MAIN REGULATION PARAMETERS - rEG
SEt
Set Point:
range from LS to US
LS
Minimum Set Point:
(-55.0°C to SET; -67°F to SET) fix the minimum value for the set point.
US
Maximum Set Point:
(SET to 110.0°C; SET to 230°F) fix the maximum value for the set point.
HY
Compressor regulation differential in normal mode:
(0.1 to 25.0°C; 1 to 45°F) set point
differential. Compressor Cut-IN is
T > SET + HY
. Compressor Cut-OUT is
T<=SET
.
HYE
Compressor regulation differential in energy saving mode:
(0.1 to 25.0°C; 1 to 45°F) set point
differential. Compressor Cut-IN is
T > SET + HES + HYE
. Compressor Cut-OUT is
T<= SET +
HES
.
HYd
Deadband output regulation (oAx=db) differential:
(0.1 to 25.0°C; 1 to 45°F)
rAr
Delay between compressor and db output (oAx=db) activation and vice versa:
(0 to 255
min)
odS
Output activation delay at start-up:
(0 to 255 min) this function is enabled after the instrument
power-on and delays the output activations.
AC
Anti-short cycle delay:
(0 to 50 min) minimum interval between a compressor stop and the
following restart.
AC1
Anti-short cycle delay (2nd compressor):
(0 to 999 sec) delay between main and second
compressor activation
rtr
Regulation percentage:
(0 to 100) the regulation value is calculated by using both P1 and P2
temperature probes. If
rtr=100
, only P1 value will be used, if
rtr=0
, only P2 value will be used.
oHt
Threshold for automatic activation of Pull-Down in normal mode (SET+HY+oHt):
(1.0 to
12.0°C; 1 to 21°F) this is the upper threshold limit used to activate the Pull-Down function.
SCo
Differential during Pull Down (SET-SCo):
(0.0 to 12°C; 0 to 21°F) this is the special set-point
value used during Pull Down (cut-off value for compressor). If
SCo=0
, the Pull-Down function
during normal mode is disabled.
