Samson TROVIS 5500 Service manual

Automation System TROVIS 5500
Heating and District Heating Controller
TROVIS 5576
Mounting and
Operating Instructions
EB 5576 EN
Firmware version 1.4x
Edition December 2005
®
Electronics from SAMSON

Disclaimer of liability
We are constantly developing our products and therefore, reserve the right to change the
product or the information contained in this document at any time without notice.
We do not assume any liability for the accuracy or completeness of these mounting and op-
erating instructions. Moreover, we do not guarantee that the buyer can use the product for
an intended purpose. SAMSON rejects any liability for claims by the buyer, especially
claims for compensation including lost profits or any other financial loss, except the damage
was caused intentionally or by gross negligence. If an essential term of the contract is
breached by negligence, SAMSON’s liability is limited to the foreseeable damage.
Safety instructions
4The device may only be assembled, started up or operated by trained and
experienced personnel familiar with the product. Proper shipping and ap-
propriate storage are assumed.
4The controller has been designed for use in electrical power systems. For
wiring and maintenance, you are required to observe the relevant safety
regulations.
2EB 5576 EN
Disclaimer of liability

Contents
1 Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.1 Operating elements. . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.1.1 Rotary pushbutton and changeover key . . . . . . . . . . . . . . . . . 6
1.1.2 Rotary switches. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.2 Operating modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.3 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
1.4 Displaying data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
1.5 Setting the controller time . . . . . . . . . . . . . . . . . . . . . . . 11
1.6 Setting the times-of-use . . . . . . . . . . . . . . . . . . . . . . . . 12
1.7 Setting the party mode . . . . . . . . . . . . . . . . . . . . . . . . 14
1.8 Activating extended operating level . . . . . . . . . . . . . . . . . . 15
1.8.1 Setting public holidays . . . . . . . . . . . . . . . . . . . . . . . . 16
1.8.2 Setting vacation periods . . . . . . . . . . . . . . . . . . . . . . . . 17
1.9 Presetting room and DHW temperature set points. . . . . . . . . . . . 19
2 Start-up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
2.1 Setting the system code number . . . . . . . . . . . . . . . . . . . . 21
2.2 Activating and deactivating functions. . . . . . . . . . . . . . . . . . 22
2.3 Changing parameters . . . . . . . . . . . . . . . . . . . . . . . . . 23
2.4 Calibrating sensors . . . . . . . . . . . . . . . . . . . . . . . . . . 24
2.5 Resetting to default values . . . . . . . . . . . . . . . . . . . . . . . 26
3 Manual operation. . . . . . . . . . . . . . . . . . . . . . . . . . . 27
4 Systems. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
5 Functions of the heating circuit . . . . . . . . . . . . . . . . . . . . 49
5.1 Weather-compensated control . . . . . . . . . . . . . . . . . . . . . 49
5.1.1 Gradient characteristic . . . . . . . . . . . . . . . . . . . . . . . . 50
5.1.2 4-point characteristic . . . . . . . . . . . . . . . . . . . . . . . . . 51
5.2 Fixed set point control . . . . . . . . . . . . . . . . . . . . . . . . . 52
5.3 Underfloor heating/drying of jointless floors . . . . . . . . . . . . . . 53
5.4 Deactivation depending on outdoor temperature . . . . . . . . . . . . 54
5.4.1 OT deactivation value in rated operation . . . . . . . . . . . . . . . . 54
5.4.2 OT deactivation value in reduced operation . . . . . . . . . . . . . . 54
5.4.3 OT activation value in rated operation . . . . . . . . . . . . . . . . . 55
5.4.4 Summer mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
5.5 Delayed outdoor temperature adaptation. . . . . . . . . . . . . . . . 56
5.6 Remote operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
5.7 Optimization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
EB 5576 EN 3
Contents

5.8 Flash adaptation . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
5.8.1 Flash adaptation without outdoor sensor (room temperature dependent) . 59
5.9 Adaptation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
5.10 Pump management . . . . . . . . . . . . . . . . . . . . . . . . . . 60
6 Functions of the DHW circuit. . . . . . . . . . . . . . . . . . . . . . 61
6.1 DHW heating in the storage tank system . . . . . . . . . . . . . . . . 61
6.1.1 DHW circuit additionally controlled by a globe valve . . . . . . . . . . 63
6.2 DHW heating in the storage tank charging system . . . . . . . . . . . 64
6.3 DHW heating with solar system . . . . . . . . . . . . . . . . . . . . 66
6.4 Intermediate heating operation . . . . . . . . . . . . . . . . . . . . 67
6.5 Parallel pump operation . . . . . . . . . . . . . . . . . . . . . . . . 67
6.6 Circulation pump operation during storage tank charging. . . . . . . . 67
6.7 Priority operation . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
6.7.1 Reverse control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
6.7.2 Set-back operation . . . . . . . . . . . . . . . . . . . . . . . . . . 68
6.8 Forced charging of the DHW storage tank . . . . . . . . . . . . . . . 69
6.9 Thermal disinfection of the DHW storage tank . . . . . . . . . . . . . 69
7 System-wide functions . . . . . . . . . . . . . . . . . . . . . . . . 71
7.1 Automatic summer time/winter time changeover . . . . . . . . . . . . 71
7.2 Frost protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
7.3 Forced operation of the pumps. . . . . . . . . . . . . . . . . . . . . 72
7.4 Return flow temperature limitation . . . . . . . . . . . . . . . . . . . 72
7.5 Condensate accumulation control . . . . . . . . . . . . . . . . . . . 73
7.6 Three-step control . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
7.7 On/off control . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
7.8 Continuous control . . . . . . . . . . . . . . . . . . . . . . . . . . 75
7.9 Releasing a control circuit over the binary input. . . . . . . . . . . . . 75
7.10 Processing of external demand in RK1 . . . . . . . . . . . . . . . . . 76
7.11 Flow rate/capacity limitation in RK1 . . . . . . . . . . . . . . . . . . 77
7.11.1 Limitation using pulse input . . . . . . . . . . . . . . . . . . . . . . 78
7.11.2 Limitation using 0/4 to 20 mA signal . . . . . . . . . . . . . . . . . 79
7.11.3 Creep feed rate limitation using a binary input . . . . . . . . . . . . . 79
7.12 Device bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
7.12.1 Requesting and processing an external demand . . . . . . . . . . . . 80
7.12.2 Sending and receiving outdoor temperatures . . . . . . . . . . . . . . 82
7.12.3 Synchronizing the clock . . . . . . . . . . . . . . . . . . . . . . . . 82
7.12.4 Priority over all controllers . . . . . . . . . . . . . . . . . . . . . . . 83
7.12.5 Connecting a TROVIS 5570 Room Panel . . . . . . . . . . . . . . . . 83
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Contents

7.12.6 Display error alarms issued by the device bus . . . . . . . . . . . . . 84
7.13 Requesting demand over a 0 to 10 V signal . . . . . . . . . . . . . . 85
7.14 Connecting potentiometers for valve position input . . . . . . . . . . . 85
7.15 Feeder pump operation . . . . . . . . . . . . . . . . . . . . . . . . 86
7.16 Locking manual level . . . . . . . . . . . . . . . . . . . . . . . . . 86
7.17 Locking the rotary switches . . . . . . . . . . . . . . . . . . . . . . 86
7.18 Setting a customized key number . . . . . . . . . . . . . . . . . . . 87
8 Operational faults . . . . . . . . . . . . . . . . . . . . . . . . . . 88
8.1 Error list . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
8.2 Sensor failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
8.3 Temperature monitoring . . . . . . . . . . . . . . . . . . . . . . . . 89
8.4 Collective error alarm . . . . . . . . . . . . . . . . . . . . . . . . . 89
8.5 Error status register . . . . . . . . . . . . . . . . . . . . . . . . . . 89
8.6 Sending text message in case of error . . . . . . . . . . . . . . . . . 90
9 Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
9.1 RS-232 system bus interface . . . . . . . . . . . . . . . . . . . . . . 93
9.2 System bus interface with RS-232/RS-485 cable converters
(for two-wire and four-wire bus) . . . . . . . . . . . . . . . . . . . . 94
9.3 Description of communication parameters to be adjusted . . . . . . . . 95
9.4 Meter bus interface . . . . . . . . . . . . . . . . . . . . . . . . . . 97
9.4.1 Activating the meter bus . . . . . . . . . . . . . . . . . . . . . . . . 97
9.4.2 Flow rate/capacity limitation using meter bus. . . . . . . . . . . . . . 98
9.5 Memory module . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
10 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 102
11 Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . 104
12 Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
12.1 Function block lists . . . . . . . . . . . . . . . . . . . . . . . . . . 107
12.2 Parameter lists . . . . . . . . . . . . . . . . . . . . . . . . . . . . 121
12.3 Assignment of the rotary switches. . . . . . . . . . . . . . . . . . . 130
12.4 Sensor resistance tables . . . . . . . . . . . . . . . . . . . . . . . 131
12.5 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
12.6 Customer data. . . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Frequently used abbreviations . . . . . . . . . . . . . . . . . . . . 147
EB 5576 EN 5
Contents

1 Operation
The controller is ready for use with the temperatures and operating schedules preset by the
manufacturer.
On start-up, the current time and date need to be set at the controller (–> section 1.5).
1.1 Operating elements
The operating controls are located in the front panel of the controller and protected by a
Plexiglas door.
1.1.1 Rotary pushbutton and changeover key
Rotary pushbutton
Turn q:
Display, select parameters and function blocks
Press :
Confirm adjusted selection or settings
Changeover key
(use pen or any other pointed item to press)
Press to switch between operating level and configuration/pa-
rameter level
6EB 5576 EN
Operation
*

1.1.2 Rotary switches
Use the three rotary switches to adjust the desired operating mode (icons on the left) and the
relevant parameters (icons on the right).
The top and middle switches are assigned to the heating circuits (see page 130). The rotary
switch in the middle is not used in systems without a second heating circuit.
The bottom switch is assigned to the DHW circuit.
Rotary switch to set the operating modes of the heating circuit
Automatic/time-controlled operation
with switchover between rated and reduced operation
Day mode (rated operation)
Night mode (reduced operation)
Control operation deactivated, frost protection only
Manual operation: correction value adjusted in percent
and activation/deactivation of the pumps
Rotary switch to set the parameters of the heating circuit
Day set point (rated room temperature)
Night set point (reduced room temperature)
Times-of-use for heating
Party mode
Controller time: setting current time, date and year
Rotary switch to set the operating modes of the DHW circuit
Automatic/time-controlled operation
with switchover between times when DHW heating
is permissible/impermissible
DHW heating deactivated, frost protection only
Manual operation: correction value adjusted in percent
and activation/deactivation of the pumps
EB 5576 EN 7
Operation

Rotary switch to set the parameters of the DHW circuit
Set point for DHW temperature
Times-of-use for DHW heating
Times-of-use for DHW circulation pump
Party mode
Note!
If more than one rotary switch is set to position “Parameter“ (right side) at the same time,
blinks on the display. The controller cannot be operated.
1.2 Operating modes
Day mode (rated operation)
Regardless of the programmed times-of-use and summer mode, the set points relevant for
rated operation are used by the controller.
Night mode (reduced operation)
Regardless of the programmed times-of-use, the set points relevant for reduced operation are
used by the controller.
Automatic mode
During the programmed times-of-use, the controller works in rated operation. Outside these
times-of-use, the controller is in reduced operation, unless control operation is deactivated
depending on the outdoor temperature. The controller switches automatically between both
operating modes.
Manual operation
Valves and pumps can be controlled manually (–> section 3).
8EB 5576 EN
Operation

1.3 Display
During operation, the display indicates the current time as well as information about the op-
eration of the controller. The times-of-use are represented by black squares below the row of
numbers at the top of the display. Icons indicate the operating status of the controller.
The controller status can be displayed in operating level (–> section 1.4).
EB 5576 EN 9
Operation
STOP
118
2
3
6
7
8
9
4
5
10 11 12 13 14 15 16 17
19
20
Fig. 1 · Icons
1 Automatic operation
2 Day mode
3 Night mode
4 Vacation mode
5 Public holiday mode
6 Frost protection
7 Malfunction
8 Circulation pump
UP1*
9 Valve RK1: OPEN
10 Valve RK1: CLOSED
11 Storage tank charging
pump SLP
12 Output BA9*
13 Circulation pump UP5*
14 DHW demand
15 Circulation pump UP2*
16 Valve RK2: OPEN
17 Valve RK2: CLOSED
18 Time-of-use
19 Control circuit assignment:
: Heating circuit RK1
: Heating circuit RK2
20 Outdoor temperature
dependent control
deactivated
* UP1, UP2, SLP, UP5, BA9 indicate possible choices for pump selection in manual mode.

1.4 Displaying data
The time, date, public holidays and vacation periods as well as the temperatures measured
by the connected sensors and their set points can be retrieved and displayed with the help of
the rotary pushbutton.
Note!
Data can also be viewed in the manual mode.
To do so, select Info, confirm and proceed as described below.
Proceed as follows:
qSelect value.
Depending on the configuration of the controller, the different data points are dis-
played:
__:__ Time
Room temperature, heating circuits 1, 2
Outdoor temperature, heating circuits 1, 2
Temperature at flow sensor VF, heating circuits 1, 2
Temperature at flow sensor VF1, primary heat exchanger circuit
Temperature at flow sensor VF2, DHW circuit
Temperature at solar collector sensor VF3
Temperature at return flow sensor RüF
Temperature at storage tank sensor SF1
Temperature at storage tank sensor SF2
Temperature at storage tank sensor SF3
Temperature at flow sensor VF4
Compare the set point/limit value and the actual value.
Press the rotary pushbutton to display the date when the time is displayed.
10 EB 5576 EN
Operation

1.5 Setting the controller time
The current time and date need to be set immediately after start-up and after a power failure
of more than 24 hours has occurred. This is the case when the time blinks on the display.
Proceed as follows:
Turn the top rotary switch to position “Controller
time“ (right side).
Display shows: time
qEdit the controller time.
Confirm the adjusted time.
Display shows: year
qEdit the year.
Confirm the adjusted year.
Display shows: date (day.month)
qEdit the date.
Confirm the adjusted date.
Display shows: time
Return the rotary switch to the desired operating mode
(left side).
EB 5576 EN 11
Operation
2423222120191817161514131211109876543210
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
242322212019181716151413121110 9876543210

1.6 Setting the times-of-use
Three times-of-use can be set for each day of the week.
If only one time-of-use is required, the start and stop times of the second time-of-use must be
adjusted to identical times. In this case, the third time-of-use is not displayed.
If only two times-of-use are required, the start and stop times of the third time-of-use must be
adjusted to identical times.
The times-of-use for the different control circuits are set at the rotary switches one after the
other:
Times-of-use Rotary switch Position
Heating circuit 1/primary heat exchanger circuit Top
Heating circuit 2/supplementary heating circuit Middle
DHW heating Bottom
Circulation pump Bottom
Parameters WE* Range of values
Period/day 1–7 1–7, 1, 2, 3, 4, 5, 6, 7 with 1–7 = every day,
1 = Monday, 2 = Tuesday, ..., 7 = Sunday
Start first time-of-use 6:00 0:00 to 24:00h; in steps of 15 minutes
Stop first time-of-use 22:00 0:00 to 24:00h; in steps of 15 minutes
Start second time-of-use 22:15 0:00 to 24:00h; in steps of 15 minutes
Stop second time-of-use 22:15 0:00 to 24:00h; in steps of 15 minutes
Start third time-of-use – 0:00 to 24:00h; in steps of 15 minutes
Stop third time-of-use – 0:00 to 24:00h; in steps of 15 minutes
* Default values (WE) valid for heating circuit 1/primary heat exchanger circuit (top rotary switch)
12 EB 5576 EN
Operation

Proceed as follows: Turn appropriate rotary switch to position
“Times-of-use”.
Display shows:
1–7
qSelect period/day for which the times-of-use are to be
valid:
1–7 = every day,
1 = Monday, 2 = Tuesday, ..., 7 = Sunday
Activate editing mode for period/day.
Display shows:
START , blinks
qEdit start time (steps of 15 minutes).
Confirm start time.
Display shows:
STOP
qEdit stop time (steps of 15 minutes).
Confirm stop time.
Display shows:
START
The second time-of-use is set like the first time-of-use.
To set the times-of-use for each day, repeat the instructions in the fields highlighted in gray.
Return the rotary switch to the desired operating mode (left side).
Note!
Do not use the 1–7 menu to check the programmed times-of-use.
If this menu is opened after the times-of-use have been set, the schedule programmed for
Monday is also adopted for all other days of the week.
EB 5576 EN 13
Operation
0123456789101112131415161718192021222324
STOP
0123456789101112131415161718192021222324
START
0123456789101112131415161718192021222324

1.7 Setting the party mode
Using the Party mode function, the controller continues or activates rated operation of the
controller during the time when the party timer is active, regardless of the programmed
times-of-use. The party timer begins when the rotary switch has been returned to operating
mode “Automatic“. When the party timer has elapsed, the party function is reset to
00:00.
The party modes for the different control circuits are set at the rotary switches one after the
other:
Party timer Rotary switch Position
Heating circuit 1/primary heat exchanger circuit Top
Heating circuit 2/supplementary heating circuit Middle
DHW circuit Bottom
Parameter WE Range of values
Continue/activate rated operation 0 h 0 to 48 hours
Proceed as follows:
Turn appropriate rotary switch to “Party mode“.
Display shows:
00:00 or the remaining time of the party timer
qEdit desired length of the one-off time-of-use.
Return the rotary switch to operating mode “Automatic“ (left side).
Note!
Elapsing of the party timer is displayed in steps of 15 minutes.
14 EB 5576 EN
Operation

1.8 Activating extended operating level
After the key number 1999 has been set, the following information can be viewed and ed-
ited after the data points listed in section 1.4 have been displayed:
4Heat capacity
4Flow rate
4Public holidays “ “ (editable)
4Vacation periods “ “ (editable)
4Valve positions
4Modem status information
4Meter bus status information
4Switching states of the binary inputs
4Operating hours of the solar pump
Opening the extended operating level:
Switch to configuration and parameter level.
Display shows:
0 0 0 0
qSet key number 1999.
Confirm key number.
Display shows: time
Note!
The additional information is no longer displayed when the key number 1999 is set again.
EB 5576 EN 15
Operation

1.8.1 Setting public holidays
On public holidays, the times-of-use specified for Sunday apply. A maximum of 20 public
holidays may be entered.
Parameter WE Level / Range of values
Public holidays –Extended operating level / 01.01 (1 Jan) to 31.12 (31 Dec)
Proceed as follows:
qIn extended operating level, select “Public holidays“.
Display shows:
Open data point for public holidays.
qIf applicable, select
– – – – .
Activate editing mode for public holiday. blinks.
qEdit desired public holiday.
Confirm public holiday.
To enter additional public holidays, re-select
– – – – and repeat the steps in the fields high-
lighted in gray.
qSelect
End .
Exit data point for public holidays.
Note! Public holidays can also be adjusted in parameter level PA5 (–> section 2.3).
Deleting a public holiday:
qUnder data point for public holidays, select the holiday you wish to delete.
Confirm selection.
qSelect
– – – – .
Delete the public holiday.
Note!
Public holidays that are not assigned to a specific date should be deleted by the end of the
year so that they are not carried on into the following year.
16 EB 5576 EN
Operation
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1.8.2 Setting vacation periods
During vacation periods, the controller constantly remains in reduced operating mode. A
maximum of 10 vacation periods can be entered. Each vacation period can be separately
assigned to the heating circuits RK1 and RK2 and/or the DHW circuit.
Parameters WE Level / Range of values
Vacation period (START, STOP) –Extended operating level / 01.01 to 31.12
Proceed as follows:
qIn extended operating level, select “Vacation periods“.
Display shows:
Open data point for vacation periods.
Display shows:
START , – –.– – (day.month)
qIf applicable, select
– – – – .
Activate editing mode for start date of vacation period.
blinks.
qEdit start date of vacation period.
Confirm start date of the vacation period.
Display shows:
STOP, – –.– – (day.month)
qEdit end of vacation period.
Confirm end of vacation period.
Black squares under 1 to 4 at the top of the display
indicate the assignment of the vacation periods to the
individual heating circuits.
qSelect the control circuit to which the current vacation
period should apply.
Current vacation period applies to circuit RK1
Current vacation period applies to circuit RK2
–
Current vacation period applies to DHW circuit
The vacation period can be assigned to a single control
circuit or any combination of all three control circuits
(RK1 and RK2, DHW circuit).
To enter additional vacation periods, re-select
– – – – and repeat the steps in the fields
highlighted in gray.
EB 5576 EN 17
Operation
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24

qSelect
End .
Exit data point for vacation periods.
Note! Vacation periods can also be set in parameter level PA5 (–> section 2.3).
Deleting vacation periods:
qUnder data point for vacation periods, select the start date of the period you wish to de-
lete.
Confirm selection.
qSelect
– – – – .
Delete vacation period.
Note!
Vacation periods should be deleted by the end of the year so that they are not carried on
into the following year.
18 EB 5576 EN
Operation

1.9 Presetting room and DHW temperature set points
For the heating circuits, the desired room temperatures during the day ( Day set point ) and
during the night (
Night set point ) can be preset.
In the DHW circuit, the temperature you wish the DHW to be heated to can be set.
The temperature set points for the different control circuits are set at the rotary switches one
after the other:
Desired temperature set point Switch Position
Heating circuit 1/prim. heat exchanger circuit: Day set point Top
Heating circuit 1/prim. heat exchanger circuit: Night set point Top
Heating circuit 2/supplementary heating circuit: Day set point Middle
Heating circuit 2/supplementary heating circuit: Night set point Middle
DHW circuit: DHW temperature set point Bottom
Parameters WE Rotary switch / Range of values
Day set point 20 °C Top, middle / 0 to 40 °C
Night set point 15 °C Top, middle / 0 to 40 °C
DHW temperature set point 55 °C Bottom / Min. to max. DHW temperature
Proceed as follows:
Turn appropriate rotary switch to “Set point temperature“.
Display shows: temperature
qSet temperature value.
Return the rotary switch to the desired operating mode (left side).
EB 5576 EN 19
Operation

20 EB 5576 EN
Operation
Fig. 2 · Level structure of TROVIS 5576
PA1/CO1: Heating circuit 1 ( )
PA2/CO2: Heating circuit 2 ( )
PA4/CO4: DHW heating
PA5/CO5: System-wide parameters
PA6/CO6: Communication parameters/
Modbus/meter bus communication
CO7: Device bus
CO8: Initialization of free
inputs
Anl: System code number
q
Configuration and
parameter level
(start-up, see section 2)
PA4
PA5
PA6
CO7
CO6
CO1
PA2
Anl
CO2CO4CO5
End PA1
CO8
q
Operating level
(display of time and
operation, see section 1)
& key number