Rev. d 01/1 6
DMP052E
FOR THE 1 ON/OFF
D
IGITAL RELAY OUTPUT IT IS POSSIBLE TO SELECT:
MODE D1
: ON/OFF HEATING HYSTERESIS
If the output value must turn to ON when the value of the Control
Sensor
goes below
the Operating Set minus the Hysteresis
band.
When the set point is achieved, the relay output is OFF.
MODE D2
: ON/OFF COOLING HYSTERESIS
If the output value must turn to ON when the control sensor
value
goes above
the Operating Set plus the Hysteresis band.
When the Set Point is achieved, the relay output is OFF.
MODE D3
: HEATING/COOLING HYSTERESIS FROM S/W
CHANGEOVER
If it is required to enable the heating or cooling hysteresis
through the contact input (D.i.2) to carry out a season
changeover. When the D.i.2 contact is open, the Loop passes to
“Heating” control type; under closed contact the Loop passes to
“Cooling” control type.
The two “Set” (SPC, SPF) and the two proportional bands (BPC,
BPF) are independent.
MODE D
4
: ON/OFF DELAY
If it is required to enable or disable a relay output with a
specified delay at stop and/or start.
The delay is considered with respect to an event, which
can be:
- Operating Mode (NM and RF => ON, FA => OFF), if a
stop and/or start delay of a device following the
Operating Mode is required.
- The status of one of the two digital inputs (D.i.1 or
D.i.2), if it is required a stop and/or start delay of a device following the status of one or both dry
contact inputs.
- The status of the other Relay output, if it is required a stop and/or start delay of a device
following the status of the other digital relay output.
The ON Delay
(RA)
and the Off Delay
(RS)
can be set individually in seconds.
The events generating the changeover are according to an “OR” logic, which means that, if more
than one event condition is enabled, it is sufficient that only one is true.
The maximum allowed delay is 30 minutes.
A2 and D2 loops control, for the Ao2 and Rel2 outputs, the SH humidity sensor only through the
operating modes A1, A2 and A4, whilst in the operating mode A3 they control enthalpy only in
temperature or complete enthalpy (temperature and humidity) if the outdoor humidity signal
through LinkBus is supplied (see page 15).
FOR ANALOGUE OUTPUT 2 IT IS POSSIBLE TO SELECT:
Mode A1
: HUMIDITY LOOP
If the output value must increase when the
SH
Humidity Sensor
value
drops under
the set point. When the set point is achieved, the
output is zero. If the SH Humidity Sensor value drops under the SPH
Humidity Set point minus BPH Humidity Proportional Band, the
relevant analogue output goes to 100% equivalent to 10Vdc.