b1y
Booster
Booster output 1 activating temperature hysteresis (
SP1
).
Adjustable between 0.1 and 50.0 ºC
dly
Delay
Control start delay. After having the controller turned on, the control output
will be activated after the time programmed in this parameter has lapsed.
Value in seconds, from 0 to 250 seconds.
0f1
Offset Sensor 1
Offset correction value for the temperature measured by the sensor 1. This
parameter allows for small adjustments in the sensor 1 temperature reading.
Measurement differences may happen, for instance, when a temperature
sensor is replaced.
Adjustable from -10.0 to 10.0 °C.
0f2
Offset Sensor 2
Offset correction value for the temperature measured by the sensor 2. This
parameter allows small adjustments to the sensor 2 temperature reading.
Measurement differences may occur, for instance, when a temperature sensor
is replaced.
Adjustable from -10.0 to 10.0 °C.
spl
SP Low Limit
Lower
limit of the setpoint value: defines the
minimum
value for setpoint
adjustment. In degrees.
Adjustable between -50 and 120 °C.
spk
SP High Limit
Upper
limit of the setpoint: defines the
maximum
value for setpoint
adjustment. Must be defined with a value necessarily
higher
than
spl
. In
degrees.
Adjustable between -50 and 120 °C.
Add
Address
Modbus Address: used to define a unique network address in instruments
that are featured with the optional RS485 Modbus RTU communication.
Address range is from 1 to 247.
Level 3 – Calibration level
The N322S inputs are factory calibrated and recalibration should only be done by qualified
personnel. If you are not familiar with these procedures do not attempt to calibrate this.
Press the
key for
10 seconds
to access this level. This level contains also the
parameters for configuration the protection.
If you have entered this level accidentally, go through all the parameters without making
any changes until the controller returns to the measurement level.
pas
Password
– Enter the correct password to unlock write operations in the
following parameters.
[l1
Calibration
Low Input 1
– Input 1 offset.
[k1
Calibration High Input 1
– Gain adjustment (full scale value).
[l2
Calibration Low Input 2
- Input 2 offset.
[k2
Calibration High Input 2
– Input 2 gain adjustment (full scale value).
FA(
Factory Calibration
– Restores factory calibration parameters. Change from
0
to
1
to restore the calibration parameters with factory values.
Prt
Protection
– Defines the levels of parameters that will be password protected.
See "
Configuration Protection
" for details.
Pa(
Password Change
– Allows changing the current password to a new one.
Values from 1 to 999 are allowed.
Sn2
Serial number 2
– First part of the controller electronic serial number.
sn1
Serial number 1
– Second part of the controller electronic serial number.
sn0
Serial number 0
–
Third part of the controller electronic serial number.
WORKING WITH THE CONTROLLER
While the solar collector is receiving energy, the temperature in the sensor S1 increases.
When T1 – T2 is higher than the value specified in
d0n
, the pump will be turned on,
circulating the heated water down and storing it in the tank.
As the pump is operating, the hot water will circulate downwards and the cold water goes
upwards. Consequently, the temperature difference between S1 and S2 tends to diminish.
When this difference goes under the value configured in
d0f
, the pump will be turned off
and the water circulation will stop.
The signaler
P1
at the front panel of the controller will light up when the control output is
activated. The signaler
P2
light up when the booster output is activated.
Fig. 2
– Front Panel
Indicator
Function
T1
Sensor 1 temperature
T2
Sensor 2 temperature
T1 T2
S1 – S2 (Differential Temperature)
CONFIGURATION PROTECTION
A protection system to avoid unwanted changes to the controller parameters is implemented.
The level of protection can be selected from partial to full. The following parameters are part
of the protection system:
Pas
: When this parameter is presented, the correct
password
should be entered to
allow changes of parameters in the following levels.
Prt
: Defines the level of parameters that will be password protected:
1
- Only
calibration
level is protected (factory configuration);
2
-
Calibration
and
configuration
levels are protected;
3
- All levels are protected –
calibration
,
configuration
and
setpoints
;
PA(
:
Parameter for definition of a new password. Since it is located in the calibration
level, can only be changed by a user that knows the current password. Valid
passwords are in the change 1 to 999.
CONFIGURATION PROTECTION USAGE
PAS
parameter is displayed before entering a protected level. If the correct password is
entered, parameters in all following levels can be changed. If wrong or no password is
entered, parameters in the following levels will be read only.
Important notes
:
1 - After
five
consecutive attempts to enter a wrong password, new tentative will be blocked
for the next 10 minutes. If the current valid password is unknown, the
master password
can be used
only
to define a new password for the controller.
2 - The password for a brand new device is 111.
MASTER PASSWORD
The master password allows user to define a new password for the controller, even if the
current password is unknown. The master password is based in the serial number of the
controller, and calculated as following:
[ 1 ] + [ higher digit of SN2 ] + [ higher digit of SN1 ] + [ higher digit of SN0 ]
For example the master password for the device with serial number 987123465 is:
1936
As follows:
sn2
= 987;
sn1
= 123;
sn0
= 465 = 1 + 9 + 3 + 6
How to use the master password:
1- Enter the master password value at
PaS
prompt.
2- Go to
PA(
parameter and enter the new password, which must not be zero (
0
).
3- Now you can use this new password to access all controller parameters with modify rights.
ERROR MESSAGES
Sensor measurement errors force the controller outputs to be turned off. The cause for these
errors may have origin in a bad connection, sensor defect (cable or element) or system
temperature outside the sensor working range. The display signs related to measurement errors
are shown below:
•
Measured temperature exceeded
maximum
allowed range for
the sensor. Short circuited
NTC
sensor.
IND
=
0
or
1
•
Measured temperature is below
minimum
measurement range
of the sensor. Broken
NTC
.
IND
=
0
or
1
•
If the temperature in S1 or S2 exceeds the measurement limit
IND
=
2
, the differential value displayed is
0
.
WARRANTY
Warranty conditions are available on our website
www.novusautomation.com/warranty
.