Siemens Synco RMZ792 Operator's manual

Edition 1.0
Series B
CE1P3113en
07.07.2011 Building Technologies
Synco
Bus operator unit RMZ792 Series B
Basic documentation

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Siemens Bus operator unit RMZ792 Series B CE1P3113en
Building Technologies 07.07.2011
Siemens Switzerland Ltd.
Industry Sector
Building Technologies Division
Gubelstrasse 22
CH- 6301 Zug
Tel. [phone]
www.siemens.com/sbt
© 2006-2011 Siemens Switzerland Ltd.
Subject to change

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Table of contents
1Overview.......................................................................................................... 7
1.1 RMZ792 bus operator unit...............................................................................7
1.2 Operator units..................................................................................................7
1.3 KNX network....................................................................................................8
1.4 Product range .................................................................................................. 9
1.5 Product documentation....................................................................................9
1.6 Features and functions ..................................................................................10
1.7 Notes .............................................................................................................11
2Operation.......................................................................................................12
2.1 Bus operator unit functions............................................................................12
2.2 Operating concept ......................................................................................... 12
2.3 Operating levels............................................................................................. 13
2.4 Menu tree ......................................................................................................15
3Device operation............................................................................................ 16
3.1 Device list navigation.....................................................................................16
3.2 Fast access using Favorites pages ...............................................................16
3.3 Data point display (visibility) .......................................................................... 17
3.4 Troubleshooting.............................................................................................17
3.5 Customized texts ...........................................................................................17
4Supply............................................................................................................ 18
4.1 Supply from KNX bus ....................................................................................18
4.2 External supply ..............................................................................................19
4.3 Supply via Synco 700 control unit .................................................................19
4.4 Troubleshooting.............................................................................................20
5Commissioning .............................................................................................. 21
5.1 Start commissioning ......................................................................................21
5.1.1 Initial commissioning .....................................................................................21
5.2 Set user level.................................................................................................21
6"Commissioning" menu ................................................................................. 22
6.1 Device address..............................................................................................22
6.1.1 Automatic address search ............................................................................. 22
6.1.2 Manual address allocation............................................................................. 23
6.1.3 Allocate addresses using ETS.......................................................................23
6.1.4 Troubleshooting.............................................................................................23
6.2 Enable communication ..................................................................................24
6.2.1 "Communication" submenu ........................................................................... 24

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6.3 Device list.......................................................................................................24
6.3.1 "Create list" submenu ....................................................................................26
6.3.2 "Display list" submenu ...................................................................................27
6.3.3 "Sort list" submenu.........................................................................................27
6.3.4 "List information" submenu ............................................................................28
6.3.5 "Delete list" submenu.....................................................................................28
6.3.6 "Add devices" submenu .................................................................................29
6.3.7 "Name devices" submenu..............................................................................29
6.3.8 "Delete devices" submenu .............................................................................30
6.4 Favorites pages .............................................................................................31
6.4.1 "Add data points" submenu............................................................................31
6.4.2 "Name data points" submenu ........................................................................32
6.4.3 "Delete data points" submenu........................................................................33
6.4.4 "Name Favorites" submenu ...........................................................................33
6.4.5 "Sort Favorites" submenu ..............................................................................34
6.4.6 "Delete Favorites" submenu ..........................................................................34
6.4.7 "Delete all Favorites" submenu......................................................................34
7Data backup...................................................................................................35
7.1 Local data backup..........................................................................................36
7.2 Data backup on second device......................................................................36
7.3 Back up data in ACS......................................................................................37
7.4 Troubleshooting .............................................................................................38
8General settings.............................................................................................39
8.1 Time and date ................................................................................................39
8.1.1 Format............................................................................................................39
8.1.2 Setting............................................................................................................39
8.1.3 Troubleshooting .............................................................................................40
8.2 Select language .............................................................................................40
8.3 Select temperature unit..................................................................................41
8.4 Operator unit display contrast ........................................................................41
8.5 Display bus fault status messages.................................................................41
8.6 Text entry .......................................................................................................42
8.7 Passwords .....................................................................................................42
8.8 Device list.......................................................................................................42
8.9 Favorites pages .............................................................................................43
9Device information .........................................................................................44
10 Faults .............................................................................................................45
10.1 Fault display...................................................................................................45
10.1.1 Device list in the "Main menu" .......................................................................46

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10.1.2 "Faults current" menu .................................................................................... 46
10.1.3 Info page and "Fault status message bus" menu .......................................... 47
10.2 Third-party bus device faults .........................................................................47
10.3 Acknowledge faults........................................................................................ 47
10.4 Reset faults.................................................................................................... 48
10.5 Delete faults................................................................................................... 48
11 Device update................................................................................................ 49
11.1 Internal memory............................................................................................. 49
11.2 Exchange bus operator unit........................................................................... 49
12 Support for errors and faults..........................................................................50
12.1 Error/fault code list......................................................................................... 50
12.2 Troubleshooting.............................................................................................50
13 Electrical connections....................................................................................52
14 Appendix........................................................................................................ 53
14.1 Acronyms....................................................................................................... 53
14.2 Editable text...................................................................................................53

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Building Technologies 1 Overview 07.07.2011
1 Overview
1.1 RMZ792 bus operator unit
The RMZ792 bus operator unit is a communicating operator unit allowing you to
operate devices from the Synco™ range in a KNX network. The operator unit can
be used both for fixed installation and mobile use (e.g. service). Third-party devices
cannot be operated using the RMZ792 bus operator unit.
The RMZ792 operator unit allows for central access to Synco 700 control units and
central communication units as well as RX.. room controllers and RD.. room
thermostats via the KNX bus.
Menu-assisted operation using clear text provides for user-friendly and easy access
at all levels for users as well as engineering and service staff.
The RMZ792 bus operator unit used identical operating elements and the typical
Synco™ operating philosophy such as RMZ790 and RMZ791 operator units for
local operation, thus without KNX communication.
•Operation of up to 150 devices.
•Supported devices:
−RM.. control units. (Synco 700 range)
−RXB2.. and RXL2.. room controllers.
−RDG.., RDF.., RDU341 room thermostats.
−QAW740 room unit.
−OZW771, OZW775 central communication units.
•Automatic device search within line/area.
•Access allowed at both user and service levels.
•Display and acknowledge faults from all devices (bus devices).
•Freely definable passwords for all access levels.
•20 customizable Favorites pages.
•Supply from KNX bus or external AC 24 V.
•Fixed installation (front, wall mounting), and mobile use as hand-held device.
1.2 Operator units
The 3 RMZ79.. operator unit types differ with regard to shape, number or operable
devices, functional scope, and type of use and site.
Name Figure Function Type Data
sheet
Bus operator
unit
Bus operation for
service and users
without commissioning
function
RMZ792 N3113
Operator unit,
plug-in type
Local operation for
commissioning,
service, and user
RMZ790 N3111
Operator unit,
detached
Local operation for
commissioning,
service, and user
RMZ791 N3112
RMZ792
bus operator unit
Possible thanks to KNX
User-friendly at all levels
Functions
RMZ79.. operator units

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The RMZ792 bus operator unit does not allow for commissioning (configuring) the
devices in the KNX network. Commissioning must occur locally on the device in the
KNX network using the RMZ790 or RMZ791 operator units or centrally using the
OCI700.1 service tool.
Name Figure Function Type Data
sheet
Service tool
OCI700 interface and
PC software ACS790
for commissioning,
service, and operation
OCI700.1 N5655
1.3 KNX network
The following figure shows a simple KNX network with an RMZ792 bus operator unit in
area 1 (fixed connection) and line 1 (mobile use).
RMZ792 Bus operator unit
RM.. Synco 700 controller
RMB.. Synco 700 control unit
QAW740 Synco 700 room unit
RXB2.. Room controller
OZW.. Central communication unit
RDG.. Room thermostats for wall mounting
RDF.. / RDU.. Room thermostats for partial wall mounting
N140/13 Area/line coupler
The bus operator unit can be used to operate bus devices, i.e. KNX network devices.
The bus devices can be integrated in one or several lines. For networks with several
lines, access is possible to devices of neighboring lines or areas regardless of the
connection location.
We recommend to place the operator unit within the line or the area of the bus device
to be operated to keep down bus load.
OCI700 service tool
Use of the RMZ792 bus
operator unit

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1.4 Product range
The RMZ792 Series B bus operator unit allows for operating the following devices
(June 2011 status):
Devices Type Data sheet no.
Universal controller RMU7x0, RMU7x0B N3144, N3150
Heating controller RMH760, RMH760B N3131, N3133
Boiler sequence controller RMK770 N3132
Central control unit RMB795 N3121
Switching and monitoring unit RMS705, RMS705B N3123, N3124
Room unit QAW740 N1633
Central communication units OZW771, OZW775 N3117, N5663
Room controller RXB21.1, RXB22.1 N3873
Room controller RXL21.1, RXL22.1 N3877
Room controller RXB24.1 N3874
Room controller RXL24.1 N3878
Room controller RXB39.1 N3875
Room controller RXL39.1 N3876
Room thermostat for fan coils RDG100KN N3191
Room thermostat for VAV RDG400KN N3192
Room thermostat for fan coils RDF301 N3171
Room thermostat for fan coils and lighting RDF301.50 N3171
Room thermostat for VAV RDU341 N3172
1.5 Product documentation
The following product documentation provides detailed information on safe and
intended use and operation of Siemens products in building services plants in addition
to the basic documentation.
Document Doc number
Data sheet "Bus operator unit RMZ792 Series B" N3113
Installation instructions (mounting and commissioning) G3113
Environmental declaration E3113
Synco product range S3110
"KNX bus" data sheet N3127
Basic documentation: Communication via KNX bus P3127
CE declaration of conformity for Synco 700 T3110
Synco 700
RXB, RXL
RDG, RDF, RDU

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1.6 Features and functions
Summary of features and functions of the RMZ792:
Features/Functions RMZ792
Operator elements
Press-and-turn button 
Info button for fast plant information display 
Fault button for optical display and acknowledgement 
LCD (128×64 pixels), background lighting 
Operation
Menu-guided operation using clear text 
Access levels 3
Password protection for each access level 
Fault handling
Info page wit clear text display for faults 
Fault indication using red LED 
Display of all faulty devise using fault symbol 
Fault acknowledgement and reset 
Display of simultaneous faults (fault list) 20
Maximum number of bus devices 150
Customizable Favorites pages
Number of Favorites pages 20
Number of data points per Favorites page 10
Functions
Automatic device search 
Manual addition/deletion of devices 
Automatic/manual sorting of the device list 
Labeling devices 
Adding/deleting/renaming/sorting Favorites 
Voltage supply
KNX bus 
External, AC 24 V 
The following functions cannot be executed using the bus operator unit:
•Configure and commission bus devices.
•Display trend diagram.
•Delete fault history.
Note

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1.7 Notes
This symbol draws your attention to special safety notes and warnings. Failing to
observe these notes may result in injury and/or serious damages.
You may use the devices listed in Section 1.4 only to control and monitor heating,
ventilating, air conditioning, and chilled water plants.
Trouble-free and safe device operation presupposes transport, storage, mounting,
installation, and commissioning as intended as well as careful operation.
Fuses, switches, wiring and earthing must comply with relevant national safety
regulations for electrical installations.
Only qualified persons trained by Siemens or its delegates may prepare for use and
commission the devices.
The devices may only be operated by staff instructed by Siemens or its delegates and
who understand the potential risks.
When wiring the system, strictly segregate the AC 230 V section from the AC 24 V
safety extra-low voltage (SELV) section to protect against electric shock hazard!
Refer to the environmental conditions specified in the respective data sheets for
storage and transport.
If in doubt, contact your supplier or Siemens.
The devices are maintenance-free and only require regular cleaning. We recommend
removing dust and dirt from system components installed in the control panels during
standard service.
Call service staff responsible for your plant in case of system faults; do not diagnose
and correct faults.
Only authorized staff may diagnose and correct faults and recommission the plant. This
applies as well to work carried out within the panel (e.g. safety checks or replacement
of fuses).
Devices contain electrical and electronic components; do not dispose of them in the
household garbage.
Comply with all local, applicable laws.
Field of application
Intended use
Electrical installation
Commissioning
Operation
Wiring
Storage and transport
Maintenance
Faults
Disposal

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2 Operation
The devices may only be operated by staff instructed by Siemens or its delegates
and who understand the potential risks.
2.1 Bus operator unit functions
The bus operator unit allows for all operations (set and read data point values). The
settings are transferred to the device in the KNX network (bus device), processed and
saved in the device.
The bus operator unit does not save data. The read values for the user are generated
in the device and transferred to the bus operator unit.
All devices whose device descriptions are saved in the bus operator unit can be
operated.
2.2 Operating concept
All setting and readout values are arranged as data points (operating lines) in a soft-
ware menu tree. Using the operating elements, every data point can be selected,
displayed or set. The LCD shows all menus as clear text.
The bus operator unit contains several programmed languages. The required
application is enabled in the commissioning phase (see installation instructions,
G3113).
RMZ792
bus operator unit
1 Display
2 INFO button
Function 1: Retrieve important plant data.
Function 2: Retrieve explanations on individual
data points in the current menu.
3 OK press-and-turn knob
Turn: Select operating line or readjust value.
Press: Confirm operating line or setting.
4 ESC button
Return to the previous menu
Cancel value adjustment.
5 Fault button " " with LED
LED: Fault display.
Press: Acknowledge or reset fault.
Basic principles
Operator elements

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The backlit display automatically switches on when using one of the operating
elements. It switches off and the start page is displayed when inactive for 30 minutes.
In the event of a pending fault, the fault information page is displayed rather than the
start page.
Start page
Device list, partly with fault symbol
Pop-up, set numerical value
Help picture with explanation on the selected
setting parameter
2.3 Operating levels
We differentiate between the following operating levels:
Level Symbol Description
Info level The INFO button accesses the Info level. Information on
menus and data points is displayed for as long as the
button is pressed.
The Info level allows for retrieving important plant data
(fault and service information). No values can be
adjusted. Access at the Info level is possible any time
and not password-protected.
User level The user level is set up as a menu. It allows you to read
data points and/or change their values. The user level
can be protected using a password against unauthorized
access. No password is set when delivered.
This level allows for accessing the user level of the bus
devices.
Background lighting
Display examples

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Level Symbol Description
Service level The service level allows for accessing other advanced
menus and data points of the bus operating device. The
service level can be protected using a password against
unauthorized access. No password is set when delivered.
The service level of the bus operator unit allows for
accessing the service level of the bus device, e.g. the
parameter settings of the control devices, or information
on plant maintenance.
Password level The password level offers additional menus and data
points to configure and commission the bus operator unit.
The password level can be protected using a password
against unauthorized access. The password is set to "7"
when delivered.
Access to the password level of bus devices is not
possible from this level. The setting is local only.
All operation is menu-based; only the Info level does not use menus. The menus and
operating lines are enabled according to access levels. A higher access level also
shows the menus and operating lines for the lower access levels. The password level
contains the entire menu. A corresponding symbol at the top left shows the active level.
Go to the Info level:
1. Press the ESC button repeatedly until the start page is displayed.
2. Press the INFO button or the press-and-turn button to go to the Info level.
3. For navigation within Info pages, repeatedly press the INFO button or the OK
press-and-turn button.
Go to the user level:
1. Press the ESC button repeatedly until the start page is again displayed.
2. Press the press-and-turn button "OK":
3. If the user level is password-protected, the Access levels menu is displayed.
4. Turn the OK button to select the User level and confirm by pressing the button.
5. Enter the password for the corresponding access level.
6. Press the OK button to confirm the password.
Go to the service or password level:
1. Press the ESC button repeatedly until the start page is again displayed.
2. Press both the OK and ESC button simultaneously. The Access levels menu is
displayed.
3. Select the desired access level by turning the OK button and press to confirm.
4. Enter the password for the corresponding access level.
5. Press the OK button to confirm the password.
The device automatically returns to the start page and the user level if no action occurs
within 30 minutes.
Navigate between
operating levels

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2.4 Menu tree
The menu tree of the bus operator unit has three different menus:
1. Info:
No values can be changed. The pages are located at the Info level and can thus
not be password-protected.
2. Devices:
Device list with all bus devices. The menu for a bus device can be opened via the
device name.
As an alternative, customized Favorites menus provide to key and commonly used
data points of bus devices.
The data points can be changed and displayed individually. As an option, the
menus
can be protected using a password (user level) against unauthorized access.
3. Local menus:
All bus operator unit settings are entered via local menus. These settings do not
apply to bus devices listed in the device list. The menus are visible at the current
operating level and password-protected by the passwords of both service and
password levels.
Type Menu name Functions Range of action
Fault status signal
bus…
Plant operating state
1. Info
Service information… Business card
Read-only access
No password
protection
Favorites… User-definable menus with
the most important values
2. Devices
Device name 1
Device name 2
…
Device name(s) …
Device list:
Access to devices 1…n
Synco bus users
Read/write
access
Password protection
(optional)
Communication settings
Build and format of device
list
Commissioning…
Build and contents of
Favorites pages
Device list… Presentation of device list
Favorite pages… Presentation of Favorites
pages
Time of day / date… Settings for time of day and
date
Faults… Display of current faults
and bus faults
Settings… Settings, e.g. language,
passwords, and texts
Device information… Device information, e.g.
hardware and software
versions
3. Local menus
Data backup… Save and retrieve settings
RMZ792 local
Limited password
protection

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3 Device operation
The bus operator unit provides access to data points of the user and service levels for
KNX network devices.
Access to the data points of the password level is possible only using local operator
units RMZ790 and RMZ791. The bus operator unit does not allow for configuring and
commissioning bus devices.
3.1 Device list navigation
The device list is generated during commissioning (list of all bus devices). Data points,
with the exception of Favorites pages, are always accessed via the device list; see
Section 3.2.
Select the desired device from the device list to open the device's menu tree. The menu
tree and navigation are the same as for local operation using RMZ790 or RMZ791.
The following information is displayed when you press the INFO button:
•Device names and, if set accordingly, device address.
•Current position in the menu tree (path).
•Long text for the selected data point.
The information is displayed as long as the button is pressed.
3.2 Fast access using Favorites pages
The Favorites pages allow for customized user interfaces for daily operation. Favorites
pages allow you to combine data points of any devices from the device list. The data
points are copied from their position in the menu tree of the corresponding device to the
desired Favorites page. This makes navigation more efficient.
The symbol at the upper right corner identifies Favorites pages. This allows you to
quickly differentiate between Favorites pages and a device's menu tree.

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3.3 Data point display (visibility)
The bus operator unit's interface only displays data points for the Synco 700 control
units needed for the current device configuration.
In the case of other devices (e.g. RX.. room controller), the bus operator unit displays
all data points regardless of configuration. As a result, data points may not reflect real
values or setting values may not trigger any action, as the current device's configuration
may not support them or may be ineffective.
3.4 Troubleshooting
Fault / Fault status message Cause / Solution
Caution!
Device version not supported
•The device list for the bus operator
unit and the software version of the
target device may not match, or the
device is not supported.
•Determine which versions of bus
operator unit and target device are
compatible. See Valid Version Set,
J3100.
•Exchange bus operator unit or target
device.
Caution!
Device not responding
•No communication with target device.
•Is the device operating?
•Is the device connected to the KNX
bus?
•Was the device address changed?
Data does not show real value (e.g.
room temperature 655.3 °C).
The data point in the current
configuration is useless (device does not
support data point visibility).
Setting has no effect. The data point in the current
configuration is useless (device does not
support data point visibility).
3.5 Customized texts
Customized device texts are taken over, i.e. the bus operator unit display is identical
to that on the local operator unit (RMZ790/791). The bus operator unit reads the
customized text from the corresponding device. The factory-set default text is displayed
until the customized text is received.
Possible cases

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4 Supply
The bus operator unit can be supplied in three different ways:
•Supply from KNX bus (power consumption 45 mA).
•External supply (from external AC 24 V supply).
•Supply from Synco 700 control unit (from service interface
of the Synco device; use only in exceptional cases).
4.1 Supply from KNX bus
If the bus operator unit is used at a place where there is no external AC 24 V supply
(e.g. mobile use), the bus operator unit can be supplied via the KNX bus.
•The slider on the rear of the bus operator unit must be set to "KNX".
•For the bus operator unit, calculate 45 mA supplied by the KNX bus. To this end,
at least 2 Synco control units with decentralized bus supply must be activated,
or a central power supply is required (see also document P3127).
•The bus operator unit is connected using the delivered cable to
- a KNX bus plug (figure a) or
- a Synco 700 control unit (figure b), or
•The KNX bus lines (terminals CE+ and CE–) are wired in the floor of the housing
(figure c, watch out for polarity).
a) b) c)
KNX
S
KNX
CE+
G0
GCE
KNX TP1
45 mA
S1
X1
S
KNX
CE+
G0
GCE
3113A05
Synco RM...
KNX TP1
45 mA
S1
N1
KNX
3113A07
KNX
S
KNX
CE+
G0
GCE
KNX
45 mA
S1
KNX KNX bus
N1 Synco 700 control unit
S1 RMZ792 bus operator unit
X1 Bus connection plug
When using the supplied cable, make sure you insert the RJ45 plug until you hear it
snap into place in the respective plugs.
Note

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4.2 External supply
We recommend AC 24 V external device supply for fixed installation (e.g. on control
panel door). In this case, the decentralized/central bus supply does not have to carry
the power load required by the bus operator unit, which is thus available to other bus
devices.
•AC 24 V voltage is required to power the bus operator unit externally. It must meet
requirements for SELV/PELV (safety extra low-voltage).
•The transformers used must be safety isolating transformers featuring double
insulation as per EN 60742 or EN 61558-2-6, designed for 100% duty.
•The slider on the rear of the bus operator unit must be set to "EXT".
•AC 24 V is supplied to the bus operator unit via terminals G and G0.
3113A02
KNX
S
EXT
CE+
G0
GCE
KNX
SP
SN
AC 24 V
4.3 Supply via Synco 700 control unit
In exceptional cases, power may be supplied to the RMZ792 bus operator unit via
a Synco 700 control unit.
•A Synco 700 control unit can only supply power for a bus operator unit if it features
3 or more extension modules.
•The slider on the rear of the bus operator unit must be set to "EXT".
•The bus operator unit is plugged into the service interface of the Synco 700 control
unit using the supplied cable.
S
CE+
G0
GCE
3113A06
Synco RM...
KNX TP1
45 mA
S1
N1
KNX EXT
Fault status messages from extension modules may be displayed when the bus
operator unit is plugged in during plant operation. The faults may result in short-term
interruption of plant operation. You must acknowledge and reset the fault status
messages.
Important note

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4.4 Troubleshooting
Faults Cause / Solution
Bus operator unit does not start.
Bus operator unit restarted cyclically.
KNX bus blocked.
Operating values of bus devices not
displayed properly or cannot be
changed.
Background illumination of display very
low.
•Wrong polarity CE+ / CE–
•Insufficient power supplied by KNX
bus (undersized bus supply, bus
voltage too low).
•Wrong switch setting ("KNX"/EXT") or
switch in illegal intermediate position.
•RJ45 plug not snapped in (no
contact).
Control unit signals extension modules'
failure, some plant parts fail.
The slider is set to "EXT" and the bus
operator unit was plugged in during plant
operation.
Solution:
1. Acknowledge or reset fault status
messages.
2. Switch off operating voltage to the
control unit, then plug in bus
operator unit and switch on
operating voltage
or
3. Plug in the bus operator unit to a
control unit without extension
modules (switch off operating
voltage prior to plugging in, then
plug in bus operator unit, and then
switch on operating voltage).
Possible cases