fisair DFRA Series Use and maintenance manual

FISAIR S.L. C/Uranio, 20; PoI. Ind. Aimayr, 28330 San Martín de la Vega (Madrid) España.
Tel: [phone] Fax: [phone] | [e-mail]| fisair.com
HANDLING AND CONTROL MANUAL
DFRA SERIES
MMCSA-EN-19-1
In compliance with the European Union regulations on the Safety of Machines,
you must read these instructions carefully before installing the equipment.

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Contents
1. Introduction. ....................................................................................4
2. DFRA operating instructions...............................................................5
3. Control panel and navigation keyboard of the PLR. ..............................7
4. Modes of operation ...........................................................................8
4.1 Manual mode.............................................................................................8
4.2 Automatic mode.........................................................................................8
4.3 Control of additional batteries .................................................................11
5. Initial state..................................................................................... 12
5.1 Configuration menu................................................................................13
5.2 Adjustments menu .................................................................................16
6. Commissioning...............................................................................17
6.1 Manual mode selection...........................................................................17
6.2 Automatic mode selection.......................................................................17
6.3 Shutdown .............................................................................................18
6.4 Emergency stop.....................................................................................18
7. Supervision menu ........................................................................... 19
8. Information menu...........................................................................21
9. List of alerts. ..................................................................................21
10. PLR connections status.................................................................... 22

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1. Introduction.
The FISAIR DFRA series dehumidifiers have moving operating parts, such as two fan
motors (supply and reactivation) and a gear motor driving the desiccant wheel; and
variable static operating parts, such as air heaters/coolers, filters and flow control
devices.
The integration of the programmable logic relay MFD-TITAN in the dehumidifier
management and operational supervision provides faster, simpler, more accurate and
more reliable operation of the dehumidifier, while reducing electrical panel accessories.
The MFD-TITAN PLR controlling this type of equipment is a programmable device for the
configuration, setting and monitoring of the different equipment components connected
in real time. The equipment is operated from its own display or from a remote device.
The Electrical Diagram should be kept
along with this manual
The automatic program is designed so that the execution, actions and/or reactions
produced by the machine and its surroundings do not affect the level of safety and
functionality the machine is built for, while also observing the electromagnetic
compatibility directive.
Any removal and/or modification of the program contained in the PLR, operated from its
own display or an online PC, will modify the guarantee conditions, as well as compliance
with the directives and explicit rules covering its manufacture. The installer, handler or
user will then be responsible for the repercussions of the changed functionality of the
device.
The programmed device does not interfere with safety against personal injury; the
following examples of passive safety components are installed for this purpose:
Grills, covers and insulation. Thus, in an extreme case of malfunction, the machine must
be switched off from the mains connection via I1 and Technical Services informed.

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2. DFRA operating instructions
a) Flow control or motor fan process air pressure control.
b) Remote ON/OFF of fan motors.
c) Remote ON/OFF drive gear motor of the desiccant wheel.
d) Reactivation battery RB control. Regulating the reactivation battery RB controls
the equipment drying capacity (see installation and maintenance manual).
Manual mode, at 100% power.
Automatic mode:
Configuration by "S" stages via two external digital signals.
Proportional configuration “P” via a 0..10V DC analogue signal from an
external regulator.
Configuration by measurment signal “M”. By means of a humidity
probe SH1 (0..10V DC).
e) Pre-heating battery control BC1:
Modo Manual o Automático. Mediante la sonda de temperatura ST0
(0..10Vcc).
f) Pre-cooling battery control BF1:
Manual or Automatic mode. Via the temperature probe ST3 (0-10V DC)
installed in the BF1.
g) Post-cooling battery BF2 and post-heating battery BC2 control:
Manual or Automatic mode, depending on the chosen configuration:
Proportional configuration “P”. Via an analogue signal 0-10V DC,
from an external regulator.
Configuration by measurement signal "M". By means of a
temperature probe ST4 (0-10V DC).

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h) Measurement and supervision:
Temperature of the reactivation air measured by the probe (ST1).
Process air temperature measured by the probe (ST0) after the pre-heating
battery BC1.
Process air temperature measured by the probe (ST3) after the pre-cooling
battery BF1.
Process air temperature measured by the probe (ST4) after the post-
cooling battery BF2.
Process air temperature measured by the probe (ST4) after the post-
heating battery BC2.
Synopsis of component operation screen.
Monitoring the proportional modulation of the BR (power delivered by the
reactivation battery BR).
Monitoring the power delivered by the pre-heating battery BC1.
Monitoring the power delivered by the pre-cooling battery BF1.
Monitoring the power delivered by the post-cooling battery BF2.
Monitoring the power delivered by the post-heating battery BC2.
Humidity measurements (relative, absolute, dew point or mixing ratio) and
temperature measured by the probe SH1-ST2 to be installed in the process
air inlet or return.
Humidity and temperature measurements by the probe SH2-ST4 to be
installed in the dry air supply.
Monitoring humidity set point.
Monitoring maximum humidity alarm set point.
Minimum reactivation air flow of and rotor rotation.
i) Safety and alarms:
Timing at the disconnection of the humid-air motor fan and the gearmotor
for cooling the equipment.
Alarm and equipment shutdown due to lack of air in the reactivation.
Alarm and equipment shutdown due to lack of rotation of the desiccant
rotor.
Alarm and equipment shutdown due to triggering any motor thermal cut-
off.
Alarm and equipment shutdown due to triggering electrical protective
devices of the heaters.
Alarm and heater shutdown due to excessive SSR temperature.
Alarm for blocked process and reactivation filters (if applicable).
Alarm and BR heater shutdown due to excessive reactivation temperature
as measured by probe ST1.
BC2 heater shutdown due to excessive temperature as measured by
operating thermostat TF3. To be reset manually.

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3. Control panel and navigation keyboard of the PLR.
I1. Break switch.
I2. MANual / 0 / AUTomatic selection switch
PLR. Programmable logic relay with LCD backlit black-and-white screen measuring
63x32mm and a navigation keyboard with the following functions:
KEY
OPERATION/DESCRIPTION
Function that will depend on the particular configuration. Where
applicable, this will be explained in the relevant section.
The screen brightness can be increased from the start display.
Function that will depend on the particular configuration. Where
applicable, this will be explained in the relevant section.
The screen brightness can be reduced from the start display.
This allows you to return from a sub-status to start display screen.
Navigation keys for moving the cursor horizontally or vertically
and/or change of sub-status.
Modify the numerical data that need to be adjusted.
Numerical and/or selection validation function.
Function that will depend on the particular configuration. Where
applicable, this will be explained in the relevant section.
On the main screen this enables you to enter the active
connections status. To exit this status, press this key again.
Function that will depend on the particular configuration. Where
applicable, this will be explained in the relevant section.

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4. Modes of operation
The unit can operate in two operating modes in which the reactivation battery RB power
output is managed differently.
The unit's drying capacity is controlled by managing the reactivation battery RB. (See
installation and maintenance manual)
There follows an explanation of the unit's operating modes:
4.1 Manual mode
If manual mode (MAN) is selected, the fan motors, speed reducer motor that turns the
rotor and the reactivation battery will start up immediately at 100% of their power
output.
If the equipment has additional batteries, you must enter the required set points in the
settings menu for proper operation.
4.2 Automatic mode
In automatic mode (AUTO) the start-up of the fan motors and the speed reducer motor
depends on the H1 interlock and the operation of the reactivation battery is contingent
on the configuration of the control and interlock H2.
There are three control configuration types for the operational management of the
reactivation battery RB.
Configuration by stages "S"
By means of two external digital signals, the reactivation battery is controlled
with two interlocks: H2 and H3. Each stage delivers an adjustable percentage of
power.

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Functionalities of the Hn interlocks in configuration by stages "S".
-Interlock H1 (Terminals 24-27): ON/OFF remote ventilation and
rotor connection.
-Interlock H2 (Terminals 24-28): Connection of the RB first phase
Requires connection H1.
-Interlock H3 (Terminals 24-29) Connection of the RB second
phase.
Proportional Configuration “P”:
By means of an external regulated analogue signal 0...10V DC from a humidity
controller/regulator a power output of 0...100% is obtained, supplied by the
reactivation battery RB.
This signal must be connected to the terminals 0A-A1. (See the associated
electrical diagram).
Functionalities of the Hn interlocks in proportional configuration "P".
-Interlock H1 (Terminals 24-27): ON/OFF remote ventilation and
rotor connection.
-Interlock H2 (Terminals 24-28): Reactivation battery ON/OFF
connection. Requires connection H1.
-Interlock H3 (Terminals 24-29) Not applicable in configuration "P".

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Configuration by Measurement signal "M":
Using the humidity probe SH1, the PLR regulates the power delivered by the
reactivation battery BR to reach the established set point.
The applicable humidity ranges for the probe to be connected are as follows:
-Relative humidity (RH): [0…100%] // [0…10V DC]
-Absolute humidity (Hx): [0…20g/kg] // [0…10V DC]
-Dew point (Tdp): [-60…+40ºC] // [0…10V DC]
The SH1 probe must be connected to the X1:0A-A2 terminals. (See the associated
electrical diagram).
The required humidity set point and the differential for the maximum permissible
humidity alarm are entered in the settings menu (AJUS) under HR/Hx/Tdp.
The humidity alarm will be visible and will flash on the main screen when the
value measured by the SH1 probe is higher than the sum total of the setpoint
and the humidity alarm.
Functionalities of the Hn interlocks in proportional configuration "P".
-Interlock H1 (Terminals 24-27): ON/OFF remote ventilation and
rotor connection.
-Interlock H2 (Terminals 24-28): Reactivation battery RB ON/OFF
connection. Requires connection H1.
-Interlock H3 (Terminals 24-29) Not applicable in configuration
"M".

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4.3 Control of additional batteries
The control of the additional batteries is independent of the selected working mode,
manual or automatic. At all times:
Pre-heating battery control BC1:
Using the temperature probe ST0, the PLR regulates the power delivered by the
pre-heating battery BC1 to reach the set point.
The temperature probe must be connected to terminals regarding the associated
electrical diagram.
The desired temperature set point is entered in the settings menu (AJUS) under
T0.
The temperature range of the probe to be connected must be [-35ºC...+35ºC]
// [0...10V DC].
Pre-cooling battery control BF1:
Using the temperature probe ST3, the PLR regulates the power delivered by the
pre-cooling battery BF1 to reach the set point.
The temperature probe must be connected to terminals regarding the associated
electrical diagram. As a general rule, the ST3 probe is installed in the BF1 and
connected according to factory settings.
The desired temperature set point is entered in the settings menu (AJUS) under
T3.
The temperature range of the probe to be connected must be [0ºC...+50ºC] //
[0...10V DC].
Post-cooling battery BF2 and post-heating battery BC2 control:
Using the temperature probe ST4, the PLR regulates the power delivered by the
post-cooling battery BF2 and post-heating battery BC2 to reach the adjusted set
point.
The combined probe SH2-ST4 must be installed in the dry air supply.
The desired temperature set point is entered in the settings menu (AJUS) under
T4.
The temperature range of the probe to be connected must be [0ºC...+50ºC] //
[0...10V DC].
Functionalities of the H4 interlock:
-Interlock H4 (Terminals 24-30): ON/OFF remote post-heating
battery BC2 conection, no matter the chosen configuration.

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5. Initial state
Having fulfilled the conditions for installation, checked that the network values match
those required for the machine and having made all of the electrical connections in
accordance with the control application:
Arm the switch (I1), and the following will appear on the control panel:
Initial state OK.
MAN -0- AUTO
Signalling card SEF-008
Remote signalling card
SEF-013
Initial state NOT OK.
MAN -0- AUTO
Signalling card SEF-008
Remote signalling card
SEF-013
On the signalling card SEF-008 lights up yellow, indicating that the unit is "live".
If there is any alarm/defect/fault in the unit, will also light up red, indicating
“warning”.
When the unit is switched on, lights up green, which indicates that the unit is
“running”.
WARNING!!! Do not switch on the unit without first reading sections 5.1 and 5.2.
Rx2 Rx3 Rx1
Rx1 Rx2 Rx3
MAN -0- AUTO

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The unit has a remote signalling card SEF-013 with three relays (NC-NA) with which we
can obtain these remote status signals. This card is located inside the unit's electrical
board, in connection block X1.
Rx1. Remote relay indicating "unit is live"
Rx2. Remote relay indicating "running"
Rx3. Remote relay indicating "defect/alarm"
See the associated electrical diagram for its electrical connection.
5.1 Configuration menu
If you have chosen to operate in automatic mode, you must select from the configuration
menu (CONF) one of the three pre-set configurations for operating the dehumidifier.
For detailed information on the configurations.
see section 4.2.
Selection of "S" stages configuration.
Selection of "P" proportional configuration.
Selection of configuration by measurement signal "M”.
Press from one of the previous screens (configuration selection)
to access this screen.
The password is obtained from the equipment electrical wiring
number. For example: The password is 08514 for the equipment
with the diagram number E8514.

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On this screen, you can select the dry air blower control mode.
NB. If you change the control mode, you must change the
differential pressure transmitter SQ1 air intakes. Refer to the
DFRA Series User Manual, section 9.9, for a detailed
explanation.
The default control mode is Flow, with the SQ1 air intakes being
available for this control type. After following the steps in the
User Manual to measure the pressure, you can change the
control mode in this menu.
In case of having standard or boosted fan, adjust the flow
through the loss of pressure as described in section 9.9 of the
user manual (MUSA).
In dehumidifiers with Gateway for communication, you can
select local or remote configuration for control:
-Local: Accepts local commissioning commands and
the instructions entered in the interface screens.
-Remote: Accepts start-up orders and instructions
through the transmission of data through the
communication bus.
In "diagram 1" the operation of the machine is shown in summary.

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Diagram 1: Mode selection process
ADJ
CONF.
P=1“Pressure”
C=1 “Flow”
R=1
“remote”
L=1
“local”
I2=A
I2=0
I2=M
STOPPAGE
I1
DISPLAY ON (Stand by)
I
2
MAN/
AUTO
MANUAL MODE
RUNNING 100%
REACTIVATION
POWER
LED
TENSION
ON
AUTO MODE
L/R
Local/
remote
o
Conf S/P/M
S/P/M
CONF = M
C/P
Flow/pressure
Terminal 24-27 H1
Terminal 28-29 H2/H3
Bornes 28-29 H2/H3
AUTO/LOCAL
FUNCTION
LOCAL
RUNNING
P=1“Pressure”
C=1 “Flow”
C/P
Flow/Pressure
Bus. See DNI
Terminal 24-27 H1
Bus. See DNI
Terminal 28-29 H2/H3
AUTO/REMOTE
FUNCTION
REMOTE
RUNNING
COMISSIONING (pt.6)

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5.2 Adjustments menu
In the adjustments menu (AJUS) you must enter the required setpoint values according
to the operating mode and configuration selected.
In this menu, the configuration setpoints and additional
batteries are adjusted.
Press to enter the menu. Using the keys and you
can navigate through the menu screens. Press if you want
to change a setpoint. When the digit flashes, adjust its value
with the keys and ; and with the key you can
return to this screen.
Applicable in "S" stages configuration
The reactivation battery is controlled with the interlocks H2 and
H3 in two stages.
In H3 the desired second stage power percentage is adjusted;
hence. the first stage percentage is:
H2 = 100% - H3
Applicable in measurement signal configuration "M":
Setting the desired humidity set point.
Enter the differential margin for maximum humidity alarm next
to the icon.
The alarm is tripped in the main synoptic when the value
measured by the humidity probe SH1 is higher than the sum
total of the humidity setpoint and the derential margin for
maximum humidity alarm.
If the dry air blower control mode selected is the Flow mode,
select the desired Q value.
If you have selected Pressure mode, adjust the desired P value.
Applies if the equipment has additional batteries
In T0, the desired temperature is set for the pre-heating battery
BC1.
In T3, the desired temperature is set for the pre-cooling battery
BF1.
In T4, the desired temperature for dry air control is set by
means of the post-cooling BF2 and post-heating BC2 batteries.

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6. Commissioning
Once the I1 break switch has been armed, the setpoints have been entered in the
adjustments menu and the configuration has been selected (in AUTO mode only), toggle
the I2 switch in the required position.
6.1 Manual mode selection
For detailed information on operation in manual mode, see section
4.1.
6.2 Automatic mode selection
For detailed information on operation in automatic mode, see section
4.2.
MAN -0- AUTO
MAN -0- AUTO

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6.3 Shutdown
To stop the device manually, set switch I2 to position 0.
The PLR is programmed to include an operation delay on the reactivation fan and
the speed reducer motor for 5 minutes to dissipate the heat from the reactivation
battery, preventing its thermostatic protection from being triggered or any
overheating due to radiation.
MAN -0- AUTO
The reactivation fan and the rotor will
continue to work for 5 more minutes to
dissipate the heat.
MAN -0- AUTO
If the equipment incorporates a post-
heating battery BC2:
The operating delay also extends to the
process fan.
6.4 Emergency stop
In the case of a serious defect that could cause personal injuries or irreparable
damage to the unit, the electric power supply must be cut off using the cut-off
switch I1.
WARNING!!! Under no circumstances must the I1 cut-off switch be used for
a controlled shut-down. This could damage components of the machine and
affect its programming.
It must be born in mind that the 5 minutes’ delay of the fan shut-down and speed
reducer motor are eliminated to cool the unit down.

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7. Supervision menu
Menu displaying the operation of the main components, the
temperature and humidity values and the unit's incidents or
alarms on the main screen.
This is the main pre-set screen.
It activates automatically after 60 seconds have elapsed.
The flashing arrows indicate the operation of the process (dry air)
fan motor, of the speed reducer motor (rotor spin) and of the
reactivation fan motor (moist air).
The reactivation battery temperature measured by the ST1 probe
appears in the top right corner of the screen.
In the event of an incident or alert in the unit, a warning triangle
will appear, followed by the name or number of the alert. For the
alarm origin and the recommended action, see section "List of
equipment alarms".
In "M" measurement signal configuration and on the main screen,
the value measured by the relative humidity probe will also
appear.
If the value measured by the probe is higher than the sum total of
the set point and the alarm entered in the adjustments menu, a
bell-shaped icon will flash on the screen (maximum humidity
alert).
With the key navigating to the left of the main screen:
In Configuration by Measurement signal "M":
It is displayed the relative humidity measured by probe SH1
and the temperature measured by probe ST2.
This screen monitors the percentage power delivered by the
pre-heating battery BC1. If the battery is working, the valve
symbol twinkles.
The displayed temperature is measured by the ST0 probe to
control BF1.
This screen monitors the percentage power delivered by the
pre-cooling battery BF1. If the battery is working, the valve
symbol twinkles.
The displayed temperature is measured by the ST3 probe to
control BF1.

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With the key navigating to the right of the main screen:
On this screen are displayed: the temperature measured by
the ST3 probe and, if automatic mode has been selected, the
percentage of the power supplied by the reactivation battery
BR.
If manual mode has been selected, the percentage will not
appear, as it is always 100%.
The humidity values SH2 and temperature ST4 from the
combined probe to be installed in the dry air outlet are
displayed.
The dry air flow rate is also shown. If the pressure control is
selected in the AJUS menu, the pressure value will be seen in
Pascals.
This screen displays the status of the H1, H2, H3 and H4
interlocks.
If proportional configuration has been selected, the value of
the external analogue signals (A1…) can be displayed on the
screen.
1U…6U show the output values of the output analogue signals
applied to each battery (see wiring diagram).
Optionally, if the dehumidifier has a gas burner reactivation
heater, it will be possible to visualize the on or off state,
represented by a flame.
If the flame monitoring system detects a defect in the ignition
sequence or during operation, it will be represented by an
alarm icon and an error code.