18
NT311 ETH
Door inputs
D1-D2
The NT311 control unit has two door inputs D1 and D2, Door 1
– Door 2- Com connections. Enabling of the D1 and D2
inputs allows monitoring of the status of the door contacts (NC), see example of connection on page 13 or 14.
With the enabled parameter, D1 or D2 YES, opening of the contact connected follows
the
switching of the the relay
ALARM switches and the ALARM LED flashes. Association of the relays with the D1-D2 parameter occurs during
programming:
➢
ALARM
door
WARNING
signal (YES enabled-NO disabled)
Display view
➢
OPE = open contact (alarm condition)
➢
CLO = contact closed (non-alarm condition)
FAN & HEATER MANAGEMENT
The NT311 control unit has two relays: FAN and HEATER that are used to manage the temperature of the cabin / panel in
which it is installed.
FAN
(THi)
If appropriately programmed, through the
THi
threshold, it can control the ON-OFF of the cabin / panel extraction fans.
e.g. THi = 30°C (FAN "YES") when the THI threshold is exceeded by 1°C, example (31°C), the FAN LED lights up and the
FAN relay switches. When the temperature goes below the programmed threshold of (-1°C) THi, example 29°C, the
relative relay switches and the FAN LED turns off.
The high flexibility of the NT311 control unit allows the enabling of contact management:
By selecting
FAN “YES”
the function will be disabled.
By selecting
FAN “NO”
the function will be disabled.
The THi threshold can be programmed in the programming steps 5-6 on page 14.
HEATER
(Tlo)
If appropriately programmed, through the
Tlo
threshold, it can control the ON-OFF of the heating system (heating
element) of the cabin / panel.
e.g. Tlo = 5°C (HEATER "YES") when the temperature goes below the threshold of (-1°C) Tlo, example 4°C, the HEATER
LED lights up and the relay switches HEATER. When the temperature exceeds (1°C) the programmed Tlo threshold,
example 6°C, the relative relay switches and the HEATER LED turns off.
The high flexibility of the NT311 control unit allows the enabling of contact management:
By selecting
HEATER “YES”
the function will be disabled.
By selecting
HEATER “NO”
the function will be disabled.
The Tlo threshold can be programmed in the programming steps 13-14 on page 14.
FAN & HEATER
(RH)
If appropriately programmed, through the
rH
threshold
,
it
can control the ON / OFF of the cabin / panel heater (heating
element) or the ON / OFF of the cabin / panel extraction system.
ES: RH = 80% (HEATER "hTR") when the control unit detects a humidity level that is 1% higher than the pre-set value
RH, example (81% RH), the HEATER LED lights up and the HEATER relay switches. When the control unit detects a
humidity rate that is -4% lower than the pre-set value, example 76%, the relative relay switches and the HEATER LED
turns off.
ES: RH = 80% (FAN "FAN") when the control unit detects a humidity rate that is 1% higher than the pre-set value RH
example (81% RH), the FAN LED lights up and the FAN relay switches. When the control unit detects a humidity rate that
is -4% lower than the pre-set value, example 76%, the relative relay switches and the FAN LED turns off.
The high flexibility of the NT311 control unit allows the enabling of contact management:
By selecting
HEATER "hTR"
the function will be enabled on the relative HEATER contact.
By selecting
FAN "FAN"
the function will be enabled on the relative FAN contact
By selecting
“NO”
the function will be disabled.
The rH threshold can be programmed in steps 21-22 of the programming on page 14.
IMPORTANT INFORMATION
Before carrying out the insulation test of the electrical panel, on which the control unit is installed, it must be
disconnected from the power supply line and the sensors disconnected, in order to prevent them from being
seriously damaged.
