Dantherm Flexibox 810 indoor Service Manual page 23

Connections,
continued
Connection This describes the connections shown at Fig. 15
J1 –power input
J5 -room sensor Temperature sensor input supporting NTC resister type: Vishay
J5- digital input
J5- alarm 1 / 2
outputs
J5 – AC 1
Page 37
J15 – HEAT
(not illustrated)
J4 - damper
J16 / 17
RS 485
J6 – TTL
SD card reader
Part
The power supply input accepts 40-60V DC, has an isolated poten-
tial to earth (cabinet parts). This means that the input even accepts
-48V DC. Just connect positive to positive, and negative to negative.
The input needs external connected 16A circuit breaker.
If input is below 40V DC the unit stops operation, and goes into
power save mode, in order to prioritize power to the telecom ser-
vices. Power save mode can activate an alarm. See more about
alarms at page 26
NTCLE100E3272GB0.
Resistance:
8790Ω @ 0°C.
3372Ω @ +20°C.
1439Ω @ +40°C.
For use with external dry contacts (max.10mA @ 12V).
Input is configurable to "Normally open" or "Normally closed" by
changing sw parameters This input can force a specific operation,
for instance shutting down the Flexibox and close the damper in
case of a fire. Input parameter setup at page 27
Dry contact, rated 0,5A@60Vdc – "Normally Open" or "Normally
closed" jumper changeable.
Operation alarms can be routed in the SW parameters list, to either
output 1 or 2
Dry contact, rated 0,5A@60Vdc – "Normally Open" or "Normally
closed" jumper changeable for connecting external air conditioners
J15 is located on the rear edge of the PCB. See unit schematics Fig.
19 on page 32 for connection.
Rated to 40-60Vdc/300mA out (use fx. Relay ABB AF12Z30-01-21
or similar)
The damper output feeds the damper motor with 40-60Vdc/ max.
100mA
RS485 – RTU Modbus.
J17 can supply the Dantherm display unit with power.
Communication data:
baud rate - 9600
data bits - 8
parity - none
stop bits - 1
flow control - none
The MODBUS device ID can be set in the parameter list.
TTL to PC interface. Used by factory only
Supports up to 32GB SD card. Learn more at page 26
Function
21