Condair Spa Control Delta User manual

2595854-B EN 2008
Humidication and Evaporative Cooling
READ AND SAVE THESE INSTRUCTIONS
Addendum manual for installation and operation
for use with Modbus, KNX & Amazon Echo
(Alexa) interfaces
SPA CONTROL INTERFACES
Modbus
KNX
Amazon Echo

Thank you for choosing Condair
Installation date (MM/DD/YYYY):
Commissioning date (MM/DD/YYYY):
Site:
Model:
Serial number:
Proprietary Notice
This document and the information disclosed herein are proprietary data of Condair Group AG. Neither this docu-
ment, nor the information contained herein shall be reproduced, used, or disclosed to others without the written
authorisation of Condair Group AG, except to the extent required for installation or maintenance of recipient's
equipment.
Liability Notice
Condair Group AG does not accept any liability due to incorrect installation or operation of the equipment or due
to the use of parts/components/equipment that are not authorised by Condair Group AG.
Copyright Notice
© Condair Group AG, All rights reserved.
Technical modications reserved.

3Contents
Contents
1 Introduction 4
1.1 Notes on this addendum manual 4
2 For your safety 5
3 Modbus interface 7
3.1 Technical data 7
3.2 Network structure Modbus RTU 8
3.3 Connection and conguration of the Modbus interface 9
3.4 Modbus Parameters 11
4 KNX & Amazon Echo (Alexa) interface 15
4.1 Connection of the SPA control board to the KNX gateway 15
4.2 Connection of the KNX gateway to a KNX network 17
4.3 Connection and conguration of the Modbus interface 18
4.4 KNX Addresses 22
4.5 Control with Amazon Echo (Alexa) 26

4Introduction
1 Introduction
1.1 Notes on this addendum manual
Subject of this addendum manual is the operation of the Control Delta SPA Control Box or the Condair
Omega via the Modbus or KNX interface.
This addendum manual is intended for use by engineers and properly trained technical personnel. Please
read this manual thoroughly before installing and conguring the corresponding interfaces.
If you have questions after reading this documentation, please contact your Condair representative.
They will be glad to assist you.
Symbols used in this manual
CAUTION!
The catchword "CAUTION" used in conjunction with the caution symbol in the circle designates notes
in this addendum manual that, if neglected, may cause damage and/or malfunction of the unit or
other material assets.
WARNING!
The catchword "WARNING" used in conjunction with the general caution symbol designates safety
and danger notes in this addendum manual that, if neglected, may cause to injury to persons.
DANGER!
The catchword "DANGER" used in conjunction with the general caution symbol designates safety and
danger notes in this addendum manual that, if neglected, may lead to severe injury or even death
of persons.
Safekeeping
Please safeguard this addendum manual in a safe place, where they can be immediately accessed. If
the equipment changes hands, the documentation must be passed on to the new operator.
If the documentation gets mislaid, please contact your Condair representative.
Language versions
This operation manual is available in various languages. Please contact your Condair representative
for information.

5For your safety
2 For your safety
General
Every person who has been assigned to install and operate the Modbus or KNX interface of the Condair
Delta SPA Control Box or the Condair Omega must have read and understood this operating manual.
Knowing and understanding the contents of this addendum manual is a basic requirement for protecting
the personnel against any kind of danger, to prevent faulty installation, operation and conguration, and
to operate the Condair Delta SPA Control Box or the Condair Omega safely and correctly.
Qualication of personnel
All work described in this addendum manual may only be carried out by persons who are well trained
and adequately qualied and are authorised by the customer.
For safety and warranty reasons any action beyond the scope of this manual must be carried out only
by qualied personnel authorised by Condair Group AG.
It is assumed that all persons working on the Modbus or KNX interface of the Condair Delta SPA Control
Box or the Condair Omega are familiar and comply with the appropriate regulations on work safety and
the prevention of accidents.
The Modbus or KNX interface of the Condair Delta SPA Control Box or the Condair Omega may not be
used by persons (including children) with reduced physical, sensory or mental abilities or persons with
lacking experience and/or knowledge.
Children must be supervised to make sure that they do not play with the Modbus or KNX interface and
the Condair Delta SPA Control Box or the Condair Omega.
Intended use
The Modbus or KNX interface of the Condair Delta SPA Control Box or the Condair Omega is
intended exclusively for controlling and querying of operating values of the SPA control software
of the Condair Delta SPA Control Box or the Condair Omega according to the instructions in this
manual. Any other type of application, without the written consent of Condair Group AG, is considered
as not conforming with the intended purpose and may lead to the Condair Delta SPA Control Box or
Condair Omega becoming dangerous and will void any warranty.
Operation of the equipment in the intended manner requires that all the information contained in
this addendum manual, in the additional manuals to the Condair Delta SPA Control Box or the
Condair Omega as well as in the separate documentations of the components used together with
the Condair Delta SPA Control Box are observed (in particular all safety instructions).

6For your safety
Danger that may arise from the Condair Delta SPA Control Box or the Condair Omega
DANGER!
Danger of electric hazard!
The Condair Omega is mains powered. Live parts may be exposed when the unit is open.
Touching live parts may cause severe injury or danger to life.
Prevention: Before carrying out any work switch off the Condair Delta SPA Control Box or the Con-
dair Omega, disconnect it from the mains via the external electrical isolator(s) and secure electrical
isolator(s) in "Off" position against inadvertent switching on.
Preventing unsafe operation
If it is suspected that safe operation of the SPA systems is no longer possible, the Condair Delta
SPA Control Box or the Condair Omega should immediately be shut down and secured against ac-
cidental power-up. This can be the case under the following circumstances:
– if the Condair Delta SPA Control Box and/or the SPA Display and/or the Condair Omega is/are dam-
aged
– if the electrical installations are damaged
– if the Condair Delta SPA Control Box and/or the SPA Display and/or the Condair Omega is/are no
longer operating correctly
– if connections and/or piping are not sealed
All persons working with the Condair Delta SPA Control Box or the Condair Omega must report any
alterations to the unit that may affect safety to the owner without delay.
Prohibited modications to the unit
No modications must be undertaken on the Modbus or KNX interface of the Condair Delta SPA
Control Box or the Condair Omega without the express written consent of Condair.

7Modbus interface
3 Modbus interface
3.1 Technical data
Protocol Modbus RTU
Interface EIA-485 (RS485) (2-wire / GND)
Galvanic isolated No
Connection Plug-in screw terminal 4-pole:
24 VDC / Data + / Data - / GND
Telegram format 1 Start bit / 8 data bit / 1 Parity bit / 1-2 Stop bit(s)
Data check CRC according to Modbus RTU specication
Modbus address 1 – 247
Factory setting: 1
Parity/Stop bits None / 1 Stop bit
None / 2 Stop bits
odd / 1 Stop bit
even / 1 Stop bit
Factory setting: even / 1 Stop bit
Baud rate 4800, 9600, 19200, 38400, 57600, 115200
Data format ABCD: big endian
BADC: big endian, swapped
CDAB: little endian, swapped
DCBA: little endian
Factory setting: ABCD: big endian
Max. number of devices 32 (according to RS485 specication)
Supported Modbus functions 3 Read Holding Registers
4 Read Input Registers
16 Write Holding Registers
23 Read/Write Multiple Registers
Register format 32-Bit UInt and 32-Bit Float Register
Max. cable lengths/ type 600 m
Twisted symmetrical cable with shield, 100-120 Ohm impedance
Topology Line (Daisy Chain)

8Modbus interface
3.2 Network structure Modbus RTU
GND
D+
D–
GND
24 VDC
D+
D–
GND
D+
D–
24 VDC
X4 X4
SPA control board 1
(Server ID= 0)
Master
RS485
SPA control board 2
(Server ID= 1)
Shield
Fig. 1: Example Modbus RTU Network
All SPA control boards that are to be controlled must be connected to the master via the Modbus interface
according to the wiring diagram above.
– Connect the cable shield on one side with the functional earth
– Connect all GND together
– Install bus line separate from supply voltage
– Topology: Daisy chain
– All devices of the same network need the same settings concerning baud rate and parity
– Every Modbus device address can only be allocated once within the same network.
The Condair Omega or the Condair Delta SPA Control box always acts as a slave. In the master-slave
principle, only the master (e.g., control computer) can initiate data transmission. The affected slave
(Condair Omega or Condair Delta SPA Control box) responds to this and delivers the queried data to
the master or performs the action requested by the master.

9Modbus interface
3.3 Connection and conguration of the Modbus interface
To connect the Modbus interface, proceed as follows:
1. Switch off the Condair Delta SPA Control Box or the Condair Omega via the unit switch. Set the
external electrical isolator(s) in the mains supply/supplies to "Off" and secure the electrical isolator(s)
in the off position against unintentional switching on.
2. For the Condair Delta SPA Control Box: Loosen the two screws of the housing cover and remove
the housing cover.
For the Condair Omega: Loosen the screw of the housing cover and remove the housing cover.
3. Break out one of the pre-punched feedthroughs in the bottom of the housing of the Condair Delta
SPA Control Box or the Condair Omega for the insertion of the interface cable and install a cable
gland.
4. Insert the interface cable via the cable gland into the control compartment of the Condair Omega or
into the Condair Delta SPA Control Box.
Fig. 2: Inserting the interface cable into the unit

10 Modbus interface
5. Connect the cable (3 x 0.34mm2) to the RS485 terminal block "X4" on the control board of the Condair
Delta SPA Control Box or the Condair Omega.
RJ45
BAT
CR 2032
X23 X10
X33
X23X24
X26X13X38X15
X20 X18 X19 X22
X6
X5
X1X2
X12
X8 X16
X3
X36
X11
X9
X17
F2
X4
F4
F1
X21
JP1
SW1
JP2
GND
D-
D+
Fig. 3: Connecting the interface cable
6. On the last unit in the network jumper "JP2" must be set (terminating resistor at the beginning and
end of the network). Jumper JP2 set = termination active.