Stulz C7000 User manual

User manual
Original operating instructions
Read carefully before use!
Keep for later reference!
Version 01-2019 – 1000755 English
for ECD/U 091 (version 05), ECD/U 091, 181, 251 (versions 06, 07),
ECD/U 502 (as of version 02)
C7000 Controller for EC Tower
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BA C7000 for EC Tower | EN | 01-2019 | 1000755
2
Dear Customer,
Many thanks for choosing to buy a Stulz product. Stulz has been a purveyor of sophisticated technical solutions for
comfort and precision climate control applications since 1947.
In Germany, Stulz is the exclusive sales partner for energy-efficient comfort air-conditioning systems of
Mitsubishi Heavy Industries.
Kind regards,
Stulz GmbH
Current updates to technical documentation
You can find the latest documents and brochures at
http://www.s-klima.de/downloads.
Figure 1: QR code for S-Klima downloadcenter
MITSUBISHI Heavy Industries Support-App
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• Ofine error code analysis
• Automatic database updates
• Stulz insider tips for troubleshooting
• Request callbacks from Stulz Support
• Send photos to Stulz Support
Figure 2: QR code for the support app
Manufacturer's address
Stulz GmbH
S-Klima Division
Holsteiner Chaussee 283
D-22457 Hamburg
Germany

3
Contents
1. Information on this document ............................................................................................... 4
1.1 Scope ................................................................................................................................................4
1.2 Other applicable documents ..............................................................................................................4
2. Presentation of the control system ....................................................................................... 5
3. Hardware components ........................................................................................................... 6
3.1 I/O controller (C7000 IOC) ................................................................................................................6
3.1.1 PIN assignment - I/O controller .................................................................................................................. 7
3.2 EDIO -Expansion card for digital inputs and outputs .........................................................................8
3.3 EBUS expansion board for RS485 bus ...........................................................................................10
3.4 C7000 Advanced - Terminal (C7000AT) ..........................................................................................11
3.5 Driver module ..................................................................................................................................12
4. C7000 Advanced user interface .......................................................................................... 13
4.1 Operational controls ........................................................................................................................13
5. Controller start ...................................................................................................................... 14
6. Info menus ............................................................................................................................. 18
6.1. Info and Operate menus of the operation interface C7000AT .........................................................18
7. Configuration ........................................................................................................................ 23
7.1 Values ..............................................................................................................................................23
7.2 Components ....................................................................................................................................29
7.2.1 Refrigerant circuit, standard ..................................................................................................................... 29
7.2.2 Air circuit, internal standard components ................................................................................................. 34
7.2.3 Air circuit, internal components ................................................................................................................ 39
7.2.4 Air circuit, external optional components ................................................................................................. 42
7.2.5 Sensors .................................................................................................................................................... 42
7.2.6 Contacts ................................................................................................................................................... 44
7.3 Statistics ..........................................................................................................................................45
8. Special operating modes ..................................................................................................... 47
8.1 Week program .................................................................................................................................47
8.2 Zone control ....................................................................................................................................48
8.2.1 Sequencing .............................................................................................................................................. 51
8.3 Manual mode ...................................................................................................................................55
8.4 UPS operation .................................................................................................................................55
9. Bus communication on the EC tower ................................................................................. 56
9.1 System examples with the C7000 Advanced ..................................................................................56
9.2 Bus set-up .......................................................................................................................................57
9.2.1 General .................................................................................................................................................... 57
9.2.2 Setting up an IO bus ................................................................................................................................ 57
9.2.3 Manual preparations ................................................................................................................................ 58
9.2.4 Adjusting the bus addresses .................................................................................................................... 58
9.2.5 Bus overview ............................................................................................................................................ 59
9.2.6 Special cases ........................................................................................................................................... 60
10. Basic settings ..................................................................................................................... 62
10.1 Load basic settings for the EC tower .............................................................................................69
10.1.1 Basic settings of size 1 and 2 ................................................................................................................. 69
10.1.2 Basic settings of size 3 ........................................................................................................................... 69
11. Alarm treatment .................................................................................................................. 70
11.1 Event log ........................................................................................................................................70
11.2 Alarm configuration .......................................................................................................................70
11.3 Alarm reset ....................................................................................................................................70
11.4 Alarm texts ....................................................................................................................................72
12. Menu structure of the main menu for operating the EC tower ....................................... 74
12.1 Menu structure of the Info main menu ...........................................................................................74
12.2 Menu structure of the Operate main menu ....................................................................................76
12.3 Menu structure of the Config main menu ......................................................................................78
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1. Information on this document
These operating instructions contain detailed information about operating and troubleshooting.
Always keep the operating instructions at the operation site.
Make sure that persons responsible for operating the product and those working on the product have fully read and
understood these operating instructions. If you have any queries, please call the Service Center.
1.1 Scope
These operating instructions apply to the following sizes and versions of the EC tower:
• Size 1 comprises the downflow and upflow units ECD/U 91:
- ECD/U 91 version 05: Production from 01.01.2017 to 03.31.2017 (Electric heater change)
- ECD/U 91 version 06: Production from 04.01.2017 (Fan impeller change)
- ECD/U 91 version 07: Production from 01.2018
• Size 2 comprises the downflow and upflow units ECD/U 181 and ECD/U 251:
- (ECD/U 181 and 251 version 05: This version has been skipped)
- ECD/U 181 and 251 version 07: Production from 01.2018
• Size 3 comprises the downflow and upflow units ECD/U 502:
- (ECD/U 502 version 01: prototype)
- ECD/U 502 version 02: Production from 05.2017
- ECD/U 502 version 03: Production from 04.01.2018
These operating instructions are valid as of the following software versions:
• Size 1 (ECD/U 91) as of version 05: as of IOC-V6.71 and AT-V4.66
• Size 1 (ECD/U 91) as of version 07: as of IOC-V6.71 and AT-V4.66
• Size 2 (ECD/U 181 and ECD/U 251) as of version 06: IOC-V6.71 and AT-V4.66
• Size 2 (ECD/U 181 and ECD/U 251) as of version 07: IOC-V6.71 and AT-V4.66
• Size 3 (ECD/U 502) as of version 02: as of IOC-V6.71 and AT-V4.66
• Size 3 (ECD/U 502) as of version 03: as of IOC-V6.71 and AT-V4.66
1.2 Other applicable documents
Besides these operating instructions, please also observe the following documents:
• EC Tower technical instruction manual (for ECD/U 091 (version 05), ECD/U 091, 181, 251 (version 06))
• EC Tower technical instruction manual (for ECD/U 091, 181, 251 (version 07))
• Technical instruction manual for EC Tower 502 as of version 03 (size 3)
• Technical instruction manual for outdoor unit
• Circuit diagram (included in the delivery of the air conditioning unit and as a download on the S-Klima website)
• Operation and connection data of the EC tower
• Commissioning log for EC tower (for ECD/U 091 (version 05), ECD/U 091, 181, 251 (version 06) and for ECD/U
091, 181, 251 (version 07)) (Download on the S-Klima website)
• Commissioning log for EC tower 502 (versions 02 and 03) (Download on the S-Klima website)
• WIB 8000 technical instruction manual (Download on the S-Klima website)
• BMS technical instruction manual (Download on the S-Klima website)
The newest technical documentation is available to download from the S-Klima website:
http://www.s-klima.de/downloads.

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The C7000 control system offers operational reliability for
industrial applications in combination with two designs for
the user interface. The C7000IOC is responsible for the
control. The C7000 Advanced is optional and serves as a
convenient user interface.
Every air conditioning unit has its own controller, while all
controllers can be connected with one another via a bus
system.
Beyond the basic functions of air conditioning technolo-
gy, the C7000 control system offers its own interesting
functions, e.g. intelligent management of the high/low
pressure alarms, a constant fan speed regulation, which
introduces a further field of application, and time-based
functions such as:
- Week timer
- Unit sequencing within definable unit groups
A watchdog on the C7000IOC monitors the CPU function
and generates a reboot as soon as no CPU activity has
been detected for 0.5 seconds.
Up to 4 EAIO/EDIO boards for additional inputs and out-
puts can be inserted at right angles on the C7000IOC.
The C7000 control system manages 4 buses:
1. IIC bus for communication between the C7000 I/O
controller and the EAIO/EDIO
2. RS485 IO bus for communication among the air con-
ditioning units
3. RS485 BMS bus for communication with a building
management system
4. RS485 component bus (e.g. for EVD driver; µPC)
2. Presentation of the control system
Analog (A) and digital (D) input and outputs
A-IN A-OUT D-IN D-OUT
IOC 4 4 11 7
EAIO 4 4 / /
EDIO / / 8 6
Maximum equipment with EEIO
IOC + 3 EAIO 16 16 11 7
IOC + 3 EDIO 4 4 35 25
Maximum equipment without EEIO
IOC + 4 EAIO 20 20 11 7
IOC + 4 EDIO 5 4 43 31
Interfaces
IOC
1 x RS485 IO bus, terminals
4 x IIC bus, SUB-D15
EBUS connection SUB-D15
RS232, SUB-D9
EAIO IIC bus, SUB-D15
EDIO IIC bus, SUB-D15
EEIO IIC bus, SUB-D15
EBUS
I/O controller connec. SUB-D15
RS485 BMS bus, terminals
RS485 component bus, terminals
C7000AT
2 x RS485 IO bus + BMS,
terminals
2 x RS232 BMS + service,
SUB-D9
IIC bus: internal data bus on the IO controller
EAIO: Expansion board for analog inputs and outputs
EDIO: Expansion board for digital inputs and outputs
EEIO: Expansion board for up to two electronic expansion
valves
EBUS: Expansion board for a RS485 bus
Technical data subject to change without notice.

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1 10 21 30 41 50
11 20 31 40 51 60
JP 2 3 4 5
JP 6
JP 7 JP 9 JP 8
OK LED
TX1 LED
RX1 LED
Error LED
3. Hardware components
3.1 I/O controller (C7000 IOC)
Jumper settings according to the
sensor type
Jp n° Pos.1-2 Pos.2-3
Analog inputs
A-IN 1 2
4-20 mA
0-10 V
A-IN 2 3
A-IN 3 4
A-IN 4 5
A-IN 5 6 not usable*
Pin position of X1
Service port
RS232
Plugs for EBUS
exp. board
Jumper for software download
Jp n° Pos. 1-2 Pos. 2-3
7 Operation Download
EBUS activation
Jp n° Function, when set
8 EBUS port 2 deactivated
9 EBUS port 3 deactivated
Jp8 and Jp9 have to be set if there is no EBUS
expansion board. On the contrary, they have to be
removed to activate the RS485 expansion buses
on the plugged EBUS expansion board.
Green LEDs for red LEDS for
digital inp. 1-11 digital outp. 1-7
LEDs on the circuit board
The function of the digital inputs is indicated by the
green LEDs:
ON: voltage present
OFF: no voltage (Alarm, error)
The function of the digital outputs is displayed by
the red LEDs:
ON: relay energized
OFF: relay not energized
The OK LED displays the IIC bus clock. The sensors
are evaluated in this cycle.
The TX1/RX1 LEDs display the data traffic on the
I/O bus (port 1).
The Error LED lights up if an alarm has occurred.
Dipswitch
for bus adr.
4 sockets
for EDIOs/
EAIOs/
EEIO
Driver module
for the I/O bus
Technical data:
Electrical supply: 24(+15 %) V (AC)
Power consumption: 9.6 VA
Fuse: 2 A inactive
Operating temperature: 5 °C to 40 °C
Storage temperature: -30 °C to 60 °C
For further information, see page 12.
*Exception: for PT1000/100 on existing
systems

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3.1.1 PIN assignment - I/O controller
Pin Designation EC Tower/EC Tower 2
1 24 VAC Electrical supply
2 GND
3 GND –
4 D-IN 1 Fan malfunction
5 D-IN 2 Status signal
Compressor 1
6 D-IN 3 –/ Status signal
Compressor 2
7 D-IN 4 Electric heater malfunction 1-3
8 D-IN 5 Filter alarm
9 D-IN 6 Humidifier malfunction
10 D-IN 7 Water detector
11 D-IN 8 Outdoor unit malfunction 1
12 D-IN 9 – / Outdoor unit 2 malfunction
13 D-IN 10 Remote on/off
14 D-IN 11 Fire
15 D-OUT 1 (NO)
Fan enable16 D-OUT 1 (COM)
17 D-OUT 1 (NC)
18 D-OUT 2 (NO)
Not assigned19 D-OUT 2 (COM)
20 D-OUT 2 (NC)
21 D-OUT 3 (NO)
Electric heater 122 D-OUT 3 (COM)
23 D-OUT 3 (NC)
24 D-OUT 4 (NO)
Electric heater 225 D-OUT 4 (COM)
26 D-OUT 4 (NC)
27 D-OUT 5 (NO)
Dehumidification or
hot-gas bypass
28 D-OUT 5 (COM)
29 D-OUT 5 (NC)
30 D-OUT 6 (NO)
Common alarm 131 D-OUT 6 (COM)
32 D-OUT 6 (NC)
33 D-OUT 7 (NO)
–34 D-OUT 7 (COM)
35 D-OUT 7 (NC)
The assignment depends on the unit type (DX1, DX2, CW, EC tower, EC tower 2). A DX1 unit is an air conditioning unit with
a refrigerant circuit; a DX2 unit is an air conditioning unit with two refrigerant circuits. A CW unit is an air conditioning unit with
one or two water circuits (CW/CW2 designs). An EC tower is an air conditioning unit with an inverter-regulated outdoor unit of
Mitsubishi Heavy Industries.
e.g. ALD 371 GE -> DX1, ASU 462 ACW -> DX2, ASD 950 CW -> CW
Pin Designation EC Tower/EC Tower 2
36 +15 V Active sensor 1
37 GND
38 A-IN 1 Room/return air temp.
39 A-IN 2 Room/return air humidity
40 +15 V –
41 GND
42 A-IN 3 Supply air temperature sensor
43 A-IN 4 Supply air humidity sensor
44 +Ub
No function
45 GND
46 A-IN 5
47 GND
48 A-OUT 1 Fan
49 GND
50 A-OUT 2 – / Compressor speed 2
51 GND
52 A-OUT 3 Humidifier or
actual value humidity
53 GND
54 A-OUT 4 Compressor speed 1
55 GND
56 Port 1-H RS485 I/O bus
57 Port 1-L
58 Port 1-H
RS485 I/O bus
59 Port 1-L
60 +15 V –
X10 SUB-D 15 Bus 3 IIC (socket1)
X11 SUB-D 15 Bus 3 IIC (socket2)
X12 SUB-D 15 Bus 3 IIC (socket3 )
X13 SUB-D 15 Bus 3 IIC (socket 4)
X14 SUB-D 15 Exp. EBUS (plug)
X15 SUB-D 9 RS232 service port (plug)

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/10.2018/G57
10
1 10 21 30
11 20 31 40
LDI
19
18
17
16
15
14
13
12
LDO
13
12
11
8
10
9
2.2 EDIO - extension board for digital in- and outputs
Pin position of X1
green LEDs for red LEDs for
digital inputs 12-19 digital outputs 8-13
of the first EDIO-board
Onboard LEDs
The function of the digital inputs is displayed by
green LEDs:
ON: voltage present
OFF: no voltage (alarm, failure)
The function of the digital outputs is displayed by
red LEDs:
ON: relay active
OFF: relay passive
enlarged section for onboard LEDs
The EDIO is an expansion board for digital inputs
and outputs. It can be plugged on the I/O controller
board at each of the 4 sockets and will be recognized
by the IOC due to a self test.
Technical Data:
Power consumption: 10,1 VA
Operating temp.: 5°C...40°C
Storage temp.: -30°C...60°C
not assigned
EN
3.2 EDIO -Expansion card for digital inputs and outputs
The EDIO expansion card is only used in the following EC towers:
• ECU/D 502 (size 3) as of version 02.

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Pin Designation EC Tower 2
1 Din 12
2 Din 13
3 Din 14
4 Din 15
5 Din 16
6 Din 17
7 Din 18
8 Din 19
9 Dout 8 (NO)
10 Dout 8 (COM)
11 Dout 8 (NC)
12 Dout 9 (NO)
13 Dout 9 (COM)
14 Dout 9 (NC)
15 Dout 10 (NO)
16 Dout 10 (COM)
17 Dout 10 (NC)
18 Dout 11 (NO)
19 Dout 11 (COM)
20 Dout 11 (NC)
21 Dout 12 (NO)
22 Dout 12 (COM)
23 Dout 12 (NC)
24 Dout 13 (NO)
25 Dout 13 (COM)
26 Dout 13 (NC)
27 PWM1 free
free
free
free
free
free
free
free
free
free
free
free
free
free
free
free
free
free
28 GND
29 PWM2 E-reheat 1 (proportional)
30 GND
X10 SUB-D 15
Pins 31 to 40 are not assigned.
The assignment depends on the unit version (DX1, DX2, CW, EC Tower 2). Explanation see page 7.
If several EDIO boards exist, the EDIO board on the lowest socket is detected as the first EDIO board and the in- and outputs are
assigned correspondingly when using the "loaddefault" command. The IOC board features four sockets for this purpose: X10, X11,
X12 and X13. X10 represents the lowest socket.
BA C7000 for EC Tower | EN | 01-2019 | 1000755
Assignment - EDIO

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Port 2
Port 3
3.3 EBUS expansion board for RS485 bus
Circuit board design
Pin Designation Function
1 Port 2-H RS485 BMS bus
2 Port 2-L
3 Port 3-H RS485 components bus
4 Port 3-L
X10 SUB-D 15 to X14 on IO controller
Jp no. Function, if open
8 EBUS port 2 activated
9 EBUS port 3 activated
Assignment - EBUS board
Technical data:
Power consumption: 11.3 VA
Operating temperature: 5 °C to 40 °C
Storage temperature: -30 °C to 60 °C
Note:
If an optional EBUS expansion card is used, jumper
8 and jumper 9 have to be removed.
If no EBUS expansion card is used, jumper 8 and
jumper 9 have to be set.
EBUS activation
Setting at the end of the bus for port
2: (Example)
Bias high
Bus termination: on
Setting in the middle of the bus for
port 3: (Example)
Bias: low
Bus termination: off
Switch for adjusting the
bias and the
bus termination

11
HW1
HW0
Pin
14
13
12
11
10
9
8
7
6
5
4
3
2
1
CPU X12
X4
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RS232 - BMS port (SUB-D 9)
RS232 - service port (SUB-D 9)
Fuse T2A
Jumper X6: Pos. A: Circuit board in download mode
Contrast settings for the display
Real-
time
clock
Technical data:
Dimensions: 270 x 110 x 40 mm
Electrical supply: 24(+15 %) VAC
Power consumption: 14 VA
Fuse: 2 A inactive
Operating temperature: 5 °C to 40 °C
Storage temperature: -30 °C to 60 °C
3.4 C7000 Advanced - Terminal (C7000AT)
Pin Designation Function
14 Port 2-L RS485 BMS bus*
13 Port 2-H
12 Port 1-L RS485 I/O bus
11 Port 1-H
10-3 Free terminal None
2 GND Electrical supply
1 +24 VAC
Driver module for
RS485-2 (BMS bus)
Driver module for
RS485-1 (IO bus)
The pictures shows the position of the
jumper if the circuit board is located at
the end of the bus.
Details on the driver module, see next
page.
Reset button
* for “SDC/MIB” protocol, the Stulz bus has to be
connected here.

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{
The driver module has the following features:
1. A static bus termination (120 Ohm) that can be activated via a jumper.
2. A circuit to set the bias for the bus: using two jumpers, either a low bias (bus center) or a high bias (bus end)
can be set.
3. Protection against ESD impulses on the data lines
The interference immunity of the bus is increased by the driver module.
When it comes to setting the jumpers, only the two depicted settings are permitted. The jumpers are implemented
blockwise. Other settings lead to unstable bus connections.
3.5 Driver module
The picture shows the position of the jumper if the
participant is located at the end of the bus. The
rightmost jumper activates the termination resistor
in the depicted position. The remaining jumpers set
a high bias.
Jumper for activating the termination resistor
Two jumpers for setting the bias on the bus.
The picture shows the position of the jumpers if the
participant is located in the center of the bus.
The rightmost jumper deactivates the termination re-
sistor in the depicted position. The remaining jumpers
set a low bias.
Participants on the end of the RS485 bus
Participants in the center of the RS485 bus

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4.1 Operational controls
Selector button Using this button, you can select menus and change parameters.
Confirmation button Using this button, you can acknowledge functions and parameters that were selected with the selector
button.
Reset button Alarm signals are acknowledged using the reset button. When first pressed, the alarm sound disappears.
When pressed a second time, the alarm signal disappears (as long as the cause has been rectified).
Alarm LED This LED flashes when an alarm has occurred and lights up after the reset button is pressed for the first
time.
Start/Stop LED This LED lights up when at least one IOC within the bus is switched on.
Start/Stop button The control of the selected unit is switched on and off using this button. If the On/Off protection is activated,
the control is switched on/off with a delay or only after a password has been entered (For details, see section
“Passwords” on page 17).
Audible indicator The audible indicator issues an alarm sound when alarms have been reported.
Display The display presents the parameters, operation states and information on the user guid ance.
<> = Selector button
Ok = Confirmation button
Reset = Reset button
LED = Alarm
LED = Start/Stop
= Start/Stop button
Display
Audible indicator
Operation - Navigation through the menus
The essential buttons for navigating in and between the menus are the selector
button and the confirmation button, which act like a mouse on a PC. To use
the PC analogy again, the cursor is shown by inverting the display of a field’s
contents. This field can contain a term, a number or a symbol.
There are two types of menu: Selection menus and parameter menus. In the
selection menus, you can select a menu item using the selector button and
go to the next submenu after pressing the confirmation button. To get back to a
higher menu level, there is a “Return” field in the upper left corner of each menu.
In the parameter menus, which are located at the end of a menu branch, you
can select parameters using the selector button. If you then press the confir-
mation button, a frame appears around the parameter and the change mode is
displayed. Using the selector button, you can now change the value and con-
clude by pressing the confirmation button. The left arrow symbol appears below
the smallest value. If you select this arrow and confirm using the confirmation
button, the parameter entry will be left without changes.
In some parameter menus, there is a “further” option at the bottom that indi-
cates that after going through the parameters using “>”, another window will
appear. You can reach this window if you press the “<” selector button when on
the “Return” field.
Note:
If the C7000AT has displayed a submenu on an IOC for 10 minutes without a
button operation, it goes back to the main menu of the corresponding unit.
4. C7000 Advanced user interface
Selection menu
Parameter menu

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>
>
= OK
5. Controller start
After switching on the electrical supply of
the C7000 Advanced, the bus overview
appears.
Using the selector button, you can select
the unit that you want to control. A symbol/
unit that is selected is inverted.
Empty bus positions are skipped.
When selecting a C7000IOC and confirm-
ing using the OK button, you reach the
main menu for the C7000IOC.
When selecting a C7000AT and confirm-
ing using the OK button, you reach the
main menu for the C7000AT (after the
0000 password has been requested and
entered).
After the last bus participant position (in
this example, bus address 14), using “>”,
you jump to a display in which all units
are highlighted. This means that you can
switch all units on/off with the local start/
stop button of the AT. If the individual units
are in operation, all units are switched off
when the button is pressed for the first
time. (For details, see the On/Off protec-
tion on the following page)
If you press the OK button in this state
(where all the units are highlighted), the
present configuration is confirmed (after
the “0000” password has been requested
and entered).
After confirming this window using "OK"
and after entering the password 0000,
you reach the placing view. Here, you
can move the C7000AT from which you
perform actions (ME) to another position
using the selector button. This changes
the bus address. (MEold at position 0 and
MEnew at position 17)
By selecting the time, you can change
the time and date.
The following things can be adjusted in
this order:
- Year, month, day, hour, minute, second.
All active bus participants apply this time
setting.
If there is a WIB8000, on which time syn-
chronization is activated, located in the
Stulz bus, all connected C7000ATs and
C7000IOCs (via the e-bus board) apply
the date and time from the WIB. This also
applies to C7000ATs that are connected
via an IO bus to an IOC, which in turn is
connected to the WIB via an e-bus board.
Placing view
Confirmation view
Main menu for C7000IOC
Main menu C7000AT

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If you select the C7000AT for further
settings and confirm with OK, you
will reach the following display with
the menu branch below after enter-
ing the password 0000:
1. In the BMS menu, you can adjust the global address of the C7000AT and
select one of the RS232 or RS485 interfaces available on the C7000AT,
as well as the protocol according to the BMS requirement.
Other things that can be adjusted include “data point lists” (depending on
the protocol), “handshake” and “baud rate”. For further information, see
the BMS instruction manual.
2. Here, you can set the alarm time delay for the bus alarm, which is
generated when the bus is interrupted.
3. You can switch the alarm sound on (-1) or off in the system menu. Fur-
thermore, you can adjust the pitch of the alarm sound.
You can decide whether the display is in degrees Fahrenheit or degrees
Celsius in the “Temperature unit” menu item.
You can select the operating language for this display and for the service
interface in the Language menu.
The Info submenu displays the C7000AT’s software version.
Using the “Background light” menu item, you can choose between “on”
(the light remains on permanently) and “auto”, which means that the light
switches off automatically once no button has been pressed for 10 minutes.
It switches back on after the first button has been pressed.
There are three possible settings for the “On/Off protection” menu item:
1. Off, 2. Dela. (Time delay), 3. Password.
With the first setting (Off), the control is switched on or off immediately
using the start/stop button of the controller.
With the second setting (Dela.), the display shown opposite appears when
the start/stop button is pressed. On this display, a green bar empties to the
left within 3 seconds. During this time, the button has to remain pressed,
otherwise the switching operation is not completed.
With the third setting (password), the operation password is requested
when the start/stop button is pressed. The switching operation is performed
once the password has been entered.
Main menu for a C7000AT

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16
}
If you select and confirm an I/O controller, you will reach the standard window,
as shown on the right. You have the option of choosing one of three submenus:
“Info”, “Operate” or “Config”.
The control type (room or supply air) is displayed in the center of the window
and underneath, the corresponding actual values (room or supply air) are given.
Under the actual values there is a symbol that indicates day or night operation.
Day operation corresponds to operation with the first setpoint temperature.
Night operation corresponds to operation with the second setpoint temperature.
Day operation Night operation
Other symbols
This symbol is shown if the controller has been switched to winter op-
eration. The symbol goes out during operation in summer.
This symbol is displayed if voltage is present at the input for the UPS
operation or UPS operation is requested via a BMS.
This symbol is displayed if the OTE special software is activated and the
unit is in OTE mode.
This symbol is displayed if the maintenance interval, which can be ad-
justed in the Config menu, has elapsed.
Main menu (for a C7000 IOC)
Menu lines
Control type
Temperature
Main function
Humidity
Maintenance symbol
Special software OTE
UPS operation
Winter operation
Day/night operation
Alarm symbol Bus address Time
Alarm text
Stop cause
Stop symbol
Unit name
Global address
Stop cause
The I/O controller can be stopped via several functions or devices that are indicated by
symbols on the AT.
This symbol indicates that the IOC has been stopped.
The following symbols indicate the cause of the unit being stopped.
stopped via Remote ON/OFF (Remote control switch at digital input)
stopped by BMS/WIB if necessary, stopped by the WIB sequencing
function (depending on the settings in the WIB)
stopped via the internal timer (week program)
stopped via the ON/OFF button on the C7000AT or by the “status stop” command
via the IOC service port.
stopped by the sequencing function (standby unit)
stopped by the fire alarm

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Symbols for main functions
If the control is in operation, the following symbols indicate the unit functions
in the main menu. These symbols are not displayed in the submenus.
Cooling, the cooling operating mode (DX, CW,
FC, EFC, MIX) is shown on the top right.
Heating
Humidification
Dehumidification
Symbol for alarm signal
This symbol is displayed in the bottom left corner when an
alarm occurs.
Parameter values
Two other displays are available instead of
numerical values:
1. ??? - Value requested at IOC, no answer
up to now
2. XXX - Components not configured
A password is needed to access the Operate
level, the Config level and the AT main menu.
There are 4 passwords in total: one user-spe-
cific password each for the Operate level and
the Config level and a master password each.
The user-specific password can be changed
and, on delivery, it is “0000” for the Operate
and Config level.
The master passwords are reserved for the
service staff and cannot be changed.
Entering the password
The individual digits can be changed using
the selector button after you have reached the
change mode using the confirmation button.
After the change has been executed, confirm
with the confirmation button and get to the next
digit using the “>” selector button.
Once you have got to the last digit and after
pressing the “>” selector button, you can enter
the main menu of the Operate and Config level,
provided that the password is correct.
There are no limits to the number of attempts.
The passwords for the Operate and Config
menu are stored on the IOC circuit board.
Therefore, it is possible to set the Operate
Passwords
password “1234” for the IOC with address 3
and the Operate password “5678” for the IOC
with address 5, for example.

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C7000 Advanced
Info
6. Info menus
6.1. Info and Operate menus of the operation interface C7000AT
Values
This window shows the following temperatures:
1. The value that is used for the control, can also be the zone temperature.
The zone values represent an average value that is calculated from all unit sensors
that are assigned to the same zone.
2. The adjusted setpoint (setpoint 1, setpoint 2)
3. The setpoint corrected by the controller, is controlled only according to this value.
Usually, this value matches the adjusted setpoint.
In the following circumstances, it can be different due to:
- Week program - External setpoint shifting
- Backup operation - Limiting control
- Integral factor
4. The actual value of the room temperature sensor.
5. The actual value of the supply air temperature sensor.
6. The outside temperature.
...Air/temperature
The info main menu has the following selection menus: Values, components, zone, statistics and system. There is a parameter
menu at the end of a menu branch in the Info main menu. Relevant values are only displayed in the parameter menu. The values
cannot be changed in the parameter menu.
The following describes the Info main menu’s selection menus and parameter menus (values). The Operate main menu and the
Config main menu are described when the relevant
selection menu is described.
The Info and Operate menus only display components,
sensors, unit alarms and auxiliary alarms that are
configured in the Config menu. This also has an effect
on the selection menus. If, for example, no heater is
configured, the “Heating” function is omitted in the “Info/
Components” menu and the “Operate/Components”
menu. If no zone is configured, this menu item is also
omitted in the “Info” and “Operate” menus. The runtime
menus under “Info/Statistics/Runtime” are also reduced
accordingly.
The Info menus for an air conditioning unit of design
A with a room air T/H sensor and an auxiliary alarm,
which is not in a zone, then shorten as shown opposite.
Subsequently, the menus appear in full size so that all
menu items can be clarified.
Menu structure of the Info main menu
The menu structure of the Info main menu is pictured in chapter “12. Menu structure of the main menu for operating the EC tower”
on page 74.
The depicted menus show the maximum conguration of the C7000AT operation interface.
In the following, menus will only be described if they are relevant for the EC tower.

19
C7000 Advanced
Info
C7000 Advanced
Info
Values
The corresponding humidity values are displayed in the same order in this window.
1. Value that is used for the control, can also be the zone humidity.
2. Setpoint
3. Shifted setpoint (caused by external setpoint setting or limiting control)
4. Actual value of the room humidity sensor.
5. Actual value of the supply air humidity sensor (if available).
6. Actual value of the outside humidity content sensor (if available).
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Components/Cooling
The C7000 Advanced gives a detailed presen-
tation of the components’ operating conditions.
In the window opposite, the top five menu items
lead to submenus. In the last menu item, you
can read off the number of configured external
alarms.
In the following windows, you can see the op-
erating state of each component:
-0- means component is switched off.
-1- means component is switched on.
xxx means components is not available.
Operating state of the compressors.
.../Compressor
This menu displays the degree of openness of different configurable louvre dampers.
The degree of openness of the fresh air and exhaust air damper with activated EcoCool
function is displayed in the first line.
The degree of openness of the air dampers for the DFC² control are displayed in the
following lines. If digital actuation has been selected for the exhaust air damper, there
are only two positions: “open” (1) and “closed” (0).
.../Air damper
...Air/humidity

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C7000 Advanced
Info If the unit is equipped with a heater, the oper-
ating state of the heaters is displayed in this
window. For heaters with constant control, the
capacity is displayed from 0-100 %.
For the warm water heater, the capacity is
specified in the form of the degree of openness
of the valve.
The number of configured electric heaters
and their operating state is displayed in the
submenu for the electric heater. The first
heater can be actuated via the pulse width
modulation quasi proportionately.
If the unit is equipped with a humidifier, the
operating state of the humidifier and the de-
gree of steam generation is displayed here
from 0 to 100 %.
The Dehumidification menu shows whether
the dehumidification is switched on and
whether the dehumidification valve is open.
A switched-on dehumidification with a closed
valve shows that the fans are dehumidified via
the speed reduction.
The number of configured fans and air
dampers is shown in this window. Additional
menus can be opened from the “Fan” and
“Air damper” menu items. These additional
menus display the operating status of the fans
including the speed from 0-100 %.
In an additional menu about the fan, the filter’s
pressure drops, measured by analog pressure
sensors, are compared with the maximum
permissible adjustable pressure drops.
If the air dampers are configured, -1- indicates
that the air damper is open.
Components
.../Heating
.../Humidifiers
.../Heating/Electric heater
.../Air
.../Dehumidification