AMR Almemo 5590-2 V5 User manual

Operating Instructions
Data Acquisition System
ALMEMO®5590-2
V1.1
14.06.2000
AHLBORN Mess- und Regelungstechnik GmbH
Eichenfeldstraße 1-3 · D-83607 Holzkirchen
Tel. [phone] · Fax [phone]

Operating Instructions
Data Acquisition System
ALMEMO®5590-2
For Reference with the ALMEMO®Manual
Table of Contents
Page
1 INTRODUCTION 4
1.1 Function Range 4
1.2 Front Operating Controls 9
1.3 Rear Operating Controls 11
2 INITIAL OPERATION 13
3 POWER SUPPLY 14
3.1 Mains Operation 14
3.2 Operation with Rechargeable Battery (Option A) 14
3.3 External Power Supply (Option U) 15
3.4 Switch On/Off, Reinitialisation 15
3.5 Data Buffer 15
4. CONNECTION OF THE TRANSDUCERS 16
4.1 Transducers 16
4.2 Measuring Inputs, Additional Channels and Extension 16
5 DISPLAY AND KEYBOARD 18
5.1 Display and Function Selection 18
5.2 Control Lamps 20
5.3 Keyboard and Locking 20
5.4 Numeric Data Input 21
5.5 Alphanumerical Input, Print Head/Device Designation 22
1 ALMEMO®5590-2
Table of Contents

Page
6 SENSOR PROGRAMMING 23
6.1 Selecting the Input Channel 23
6.2 Selecting the Measuring Range 24
6.3 Changing the Dimension 26
6.4 Measuring Point Designation 27
6.5 Limit Value, Hysteresis 27
6.6 Correction Values, Sensor Adjustment 28
6.7 Scaling, Decimal Point Setting 29
6.8 Locking the Programming of the Sensor 30
6.9 Copying Measuring Points (with MU connector only) 30
7 MEASUREMENT 31
7.1 Continuous Measurement of a Measuring Point 31
7.1.1 Measured Value, Selecting the Measuring Point 31
7.1.2 Memory for Peak Values 32
7.1.3 Setting the Measured Value to Zero, Zero Point Correction 33
7.1.4 Atmospheric Pressure Compensation 34
7.2 Measuring Point Scans 34
7.2.1 Single Measuring Point Scan 34
7.2.2 Output Channel and Output Format 35
7.3 Cyclic Measuring Point Scan 36
7.3.1 Output Cycle 36
7.3.2 Measuring Cycle and Memory Activation 37
7.3.3 Conversion Rate, Continuous Measuring Point Scan 37
7.3.4 Time and Date 38
7.3.5 Time and Date of Start, Time and Date of End 38
7.3.6 Start and Stop by Limit Values 39
7.3.7 Averaging 39
7.4 Data Memory 41
7.4.1 Data Acquisition 41
7.4.2 Output of Measuring Data 41
7.5 Numbering of Measurements 43
8 DIGITAL DATA OUTPUT 44
8.1 Baud Rate, Data Format 44
8.2 Device Address and Networking 44
8.3 Built-In Printer (Option D) 45
8.4 Lists of Measured Values 46
8.5 Manual Data Output 46
ALMEMO®5590-2 2
Table of Contents

Page
9 ANALOGUE OUTPUT 48
10 TROUBLESHOOTING 49
11 ELECTROMAGNETIC COMPATIBILITY 50
APPENDIX 51
Technical Data 51
Product Overview 52
3 ALMEMO®5590-2
Table of Contents

1. INTRODUCTION
The data acquisition system ALMEMO®5590-2 Version 5 is an instrument
from the unique product range of measuring devices that are all equipped with
the ALMEMO®connector system, which has been patented by Ahlborn GmbH.
The intelligent ALMEMO®connector provides important advantages with
regard to the connection of sensors and peripherals as all parameters are
stored in an EEPROM within the connector. As a result, the programming that
usually has to be performed for the connection is not required.
All sensors and output modules can be connected to all ALMEMO®measuring
devices in the same way. The operation and programming is identical with all
units. Therefore, all of the ALMEMO®measuring system items listed below are
described, in detail, in a separate ALMEMO®manual that is supplied with every
device:
Detailed description of the ALMEMO®system (manual section 1)
Overview of the device functions and measuring ranges (manual section 2)
All sensors with basic principles, operation, technical data (man. section 3)
The options for connecting existing sensors (manual section 4)
All analogue and digital output modules (manual section 5.1)
The interface module RS232, fiber optics, Centronics (manual section 5.2)
The entire ALMEMO®networking system (manual section 5.3)
All functions and their control via the interface (manual section 6)
A complete interface command list with all print outputs (manual section 7)
These operating instructions only cover features and controls that are specific
for a certain device. As a result, the sections dealing with the system control
via keyboard will only often provide a note referring to a more detailed
description within the manual (manual section x.x.x).
1.1 Function Range
The system ALMEMO®5590-2 has up to 89 electrically isolated measuring
inputs with up to 99 measuring channels, a real time clock and a memory of
500kB for 100,000 measured values. For easy operation it is equipped with a
rotary switch, alphanumerical keyboard and a 24-digit two-line LCD display.
Two output sockets allow for connecting any ALMEMO®output modules, for
example, the analogue output, digital interface, trigger input or alarm contacts.
Several devices can be networked by a simple connection between the
devices.
SENSOR PROGRAMMING
The measuring channels are automatically programmed by the ALMEMO®
connectors of the sensors. However, the user can easily complete or modify
the programming via keyboard or via interface.
ALMEMO®5590-2 4
Introduction

Measuring Ranges
There are corresponding measuring ranges for sensors with a non-linear
characteristic such as 10 thermocouple types, Ntc and Pt100 sensors, infrared
sensors, and flow sensors (rotating vanes, thermoanemometers, pitot tubes).
Humidity sensors are available with function channels that also calculate
humidity data such as dew point, mixture ratio, vapour pressure and enthalpy.
Even complex chemical sensors can be used. The acquisition of measured
data from other sensors is easily possible by using voltage, current and
resistance ranges with individual scaling in the connector. Existing sensors can
be used without problems. Only the corresponding ALMEMO®connector has to
be connected using its terminals. Furthermore, there are adapter connectors
with an own microcontroller for digital signals and for measuring frequencies
and pulses. This way, nearly all sensors can be connected to any ALMEMO®
measuring instrument and are interchangeable without requiring any settings.
Function Channels
Maximum, minimum, average values and differences of certain measuring
junctions can be programmed as function channels and can be processed and
printed like normal measuring junctions. Furthermore, function channels for
special measuring tasks are provided to determine temperature coefficients
Q/∆t and wet bulb globe temperatures.
Dimension
The 2-digit dimension can be altered for each measuring channel so that the
display and the printout will always indicate the correct dimension, for example
when a transmitter is connected. The conversion from °C to °F is automatically
performed according to the dimension.
Name of Measured Values
Sensors can be identified by a 10-digit alphanumeric designation. It is entered
via the interface and appears on the printout or display if the evaluation is done
via PC.
Correction of Measured Values
For correcting measured values a zero point and slope (gain) correction can be
applied to the measured value of each measuring channel. This also allows for
sensors to be interchanged that usually, at first, require an adjustment
(expansion, force, pH). The zero point and the slope (gain) correction are
virtually performed by the push of a button.
Scaling
The base value and the factor allow for a further scaling of the corrected
measured value of each measuring channel for zero point and slope (gain).
The decimal point position can be set by the exponent.
5 ALMEMO®5590-2
Functions

Limit Values and Alarm
Two limit values (Max and Min) can be set for each measuring channel. An
alarm value printout can be performed if a limit value is exceeded and, by
means of relay output modules, alarm contacts are provided that can be
individually allocated to limit values. As a standard, the hysteresis is set to 10
digits, however, it can also be adjusted. Furthermore, limit value exceeding can
also be used to start or stop a measurement.
Sensor Locking
All sensor data stored in the EEPROM of the connector can be protected
against undesired access by means of a graded locking function.
MEASUREMENT
The standard equipment includes one measuring circuit board with 9
electrically isolated inputs. The number of inputs can be increased in steps of
10 to a maximum of 89 by adding up to 8 (at max.) selector switch boards. A
maximum of 4 measuring channels is available for each input, i.e. it is also
possible to evaluate double sensors, sensors with different scaling or sensors
with function channels. The measuring channels can be successively selected
forwards or backwards or by their number via keyboard. The selected
measuring point can be scanned with a conversion rate of 2.5 or 10
measurements/second. The measured value is calculated and indicated on the
display or, if available, provided on the analogue output.
Measured Value
A continuous presentation of measuring data from the selected measuring
point is provided and also includes automatic zero point correction and optional
correction of the measured value or new scaling. A sensor breakage condition
is, with most sensors, automatically detected (exception: connectors with
shunts, dividers or additional electronics).
Analogue Output and Scaling
By means of analogue start and analogue end the indicated meas. value can
be scaled so that the resulting meas. range covers the full analogue output
range (2V, 10V or 20mA).
Measuring Functions
Some sensors require special meas. functions to achieve an optimal
acquisition of meas. data. The cold junction compensation is available for
thermocouples, a temperature compensation for dynamic pressure and pH and
conductivity probes, and an atmospheric air pressure compensation for
humidity sensors, dynamic pressure sensors and O2sensors. With infrared
sensors the parameters zero point and slope correction are used for
background temperature and emissivity factor.
Maximum and Minimum Value
Each measurement involves an acquisition and storing of the maximum and
minimum value. These values can be displayed, printed or cleared.
ALMEMO®5590-2 6
Functions

PROCESS FLOW PROGRAMMING
A cyclic meas. point scan with a time-based process flow control is required to
register the measuring data of all connected sensors. For this purpose, the real
time clock, the output cycle and the measuring cycle are available and, if fast
processing is required, the conversion rate is available. The measurement can
be started and stopped by using the keyboard, the interface, an external trigger
signal, the real time clock or an exceeding of limit values.
Time and Date
The real time clock with date function or the pure measuring time are used for
an accurate recording of any measurement. Start and end time/date can be
programmed in order to start or stop a measurement.
Output Cycle
The output cycle is programmable between 1s and 59h/59min/59s and
provides a cyclic output of measured values to the interfaces or memories and
also provides a cyclic averaging.
Output Cycle Factor
If necessary, the output cycle factor allows for limiting the data output of
particular channels so that an excessive data flow can be limited, especially
during data storage.
Measuring Cycle
The measuring cycle, also programmable between 1s and 59h/59min/59s, is
for a cyclic scanning with a display of all measured values, limit value
monitoring including alarm message and output of alarm values, averaging
and, if necessary, a storage of measured values.
Average Value
The measured values that result from scanning the measuring junctions can
be averaged as desired either over the total measuring time or over the output
cycle time. Function channels are provided for a cyclic output of average
values.
Conversion Rate
With ALMEMO®
V5 devices, all measuring points can be continuously
scanned with the conversion rate (2.5 or 10 meas./s). It is possible to store all
measured values in the memory and/or to perform an output via the interface.
Storage of Measured Values
During the measuring or output cycle, all measured values or alarm values can
be manually or automatically stored in a buffered RAM. The memory capacity
is, as standard, 500kB, which allows up to 100,000 measured values. The
memory organisation can be configured as linear or ring memory. The output
can be optionally performed via interface, analogue output or display. It is
possible to select a certain time interval, number or alarm value.
7 ALMEMO®5590-2
Functions

Numbering of Measurements
Single scans or entire series of measurements can be identified and selectively
read out from the memory.
Control Outputs
The interface allows to individually trigger up to 4 output relays and one
analogue output.
Keyboard Lock
The keyboard operation can be locked with a key switch.
Output
All measuring and programming data is accessible by means of the LCD
display. RS232, RS422, RS485 and a Centronics interface are available by
using different interface cables. All data logs, measured values and
programmed parameters can be provided as output to any peripheral
equipment. The output of measuring data can be selected in list format,
columns or spreadsheet format. Files in spreadsheet format can be processed
by each spreadsheet software. The print header can be programmed
specifically to the company or application.
Networking
All ALMEMO®devices can be addressed and can be easily networked by a
simple connection with network cables or network junctions for longer
distances.
Software
The AMR-Control software, which allows for the entire programming of the
sensors, the configuration of the measuring instrument and the read-out of the
data memory is supplied with each ALMEMO®manual. The integrated terminal
also allows for online measurements. The WINDOWS®software packages,
Win-Control and DATA-Control, are available for data acquisition of networked
devices, graphical presentation and complex data processing. The software
LogCel is provided for an online import of data into MS Excel®.
OPTION Rechargeable Battery
By using the option ´Rechargeable Battery´ the data acquisition system can run
independently with own power supply for several days. Afterwards the
rechargeable battery can be recharged within 2 hours by using a power supply
unit. The rechargeable battery can also be used on a long-term base for power
failure protection.
OPTION Built-In Printer
The 40-digit built-in thermal printer allows for an independent operation of the
data acquisition system including a local log printout.
ALMEMO®5590-2 8
Functions

1.2 Front Operating Controls
(1) ON SWITCH rocker switch: for SWITCH-ON of the system
control lamp ON: on when system is switched on
control lamp U-ext.: on when power supply is connected
option recharg. batt.: on when battery is being recharged
flashes when battery is recharged
(2) LCD DISPLAY 2 lines with 24 characters dot matrix
1st line: meas. channel designation meas. value dimension
2nd line: input channel meas. function value dimension
factor value exponent
time(s): output channel function hr : min : sec
date: function day . mth . year
(3) LCD contrast control for LCD display
(4) KEY SWITCH
Keyboard locking control lamp OFF: key operation is not possible
9 ALMEMO®5590-2
Front Operating Controls

(5) FUNCTION SELECTOR SWITCH
Function Add. Function with FUNCTIONzControl Lamps
MEAS. VALUE zeroing -> base sensor breakage
zeroing -> zero
MAX.VALUE Ana-Start:max value > limit value
MIN.VALUE Ana-End:min value < limit value
AVG. VALUE Avg. mode:averaging active
Count:
MEMORY Mem free: memory active
NUMBER number active
MEAS. CYCLE Meas. rate: measuring cycle running
OUTPUT CYCLE Address:output cycle running
RANGE, UNIT Locking:dimension changed
LV:MAX Action max exceeding of limit value
LV:MIN Action min exceeding of limit value
BASE Zero corr:zero point changed
FACTOR, exponent Slope corr: factor/exp changed
TIME Start: / Stop: start/end programmed
DATE Start: / Stop: start/end programmed
PROGRAM, baud rate Atm.press. / hysteresis:
(6) FUNCTION KEYS
ENTE
R
CHANNEL x x select measuring point/input channel
increase meas. point/input channel
decrease meas. point/input channel
START start measuring point scan
STOP stop measuring point scan
MANUAL single measuring point scan
PRINT data output to output channel
ON activate programming value
OFF de-activate programming value
CLEAR clear programming value / meas. data
COPY copy programming for meas. point(s)
FUNCTION next function (add. function)
FUNCTION previous function (add. function)
ENTER - 1 2 . 3 Ent input numerical parameters "-12.3"
ENTER ×00 9 Ö0Ö00 ÖEnt input alphanum. designation "Test"
big S T e s s t
Öcursor position to the right
Õcursor position to the left
Ent complete input
Esc abort input
ALMEMO®5590-2 10
Front Operating Controls

1.3 Rear Operating Controls
(7) POWER SUPPLY
Plug-In Module Power Supply ES 5590-N1/2
Socket U-DC 9..13V DC, for mains adapter ZB 5090-NA3, 12V, 2A
Option A: 12V DC for rech. batt. for mains adapter ZB 5090-NA3
Option V: 10..36V DC electr. isol. with DC/DC converter, 12V, 1A
Option N: mains socket 90-260V AC 50-60Hz
(8) Plug-In Module Meas. Circ. Board ES 5590-G1 (for ALMEMO single connectors)
M00 to M08 9 measuring inputs for analogue or digital sensors
M10 to M38 27 add. channels for double sensors and arithm. chann.
A1 V24 interface with cable ZA 1909-DK
A1 V24 interface with fiber optics ZA 1909-DKL
A1 RS 422 with network distributor ZA 5099-NVB
A1 RS 485 with network branch box ZA 5085-NV
A1 Centronics with cable ZA 1936-DK
A1, A2 analogue output with cable ZA 1601-RK
A2 networking with network cable ZA1999-NK
A2 trigger input with cable ZA 1000-EK/ET
A2 2 relay outputs with cable ZA 1000-EGK/EAK
11 ALMEMO®5590-2
Rear Operating Controls

Extension with Passive Selector Switch Boards
(9) Plug-In Mod. Select. Switch Board ES 5590-MF (f. ALMEMO®single connectors)
M0 to M9 10 measuring inputs for analogue or digital sensors
M10 to M39 30 add. channels for double sensors and arithm. channels
A1 analogue output with cable ZA 1601-RK
2 alarm outputs with cable ZA 1000-EGK
CODE SWITCH board number 0 to 7 internally on-board
(10)Plug-In Module Selector Switch Board ES 5590-MU
(for ALMEMO®10-fold connector ZA 5590-MU)
M00 to M09 10 measuring inputs for analogue sensors
LV max, LV min 2 alarm outputs for all meas. points of plug-in mod.
CODE SWITCH board number 0 to 7 internally on-board
ALMEMO®5590-2 12
Rear Operating Controls

2. INITIAL OPERATION
1. Connect the transducers to the sockets Mxx (8) and (9), see 4.
2. Ensure power supply by mains adapter connected to socket (7), see 3.1
3. For switch-on press the rocker switch (1), so the control lamp is on, s. 3.4
4. For displaying the measured values,
select function MEAS. VALUE by using the rotary switch (5),
select measuring channel with the key , read the meas. value, see 7.1.
5. For storing the measured values:
Use the function MEMORY and keys ENTER, CLEAR to clear the memory.
Use MEAS. CYCLE and the key ON to activate the memory, see 7.3.2.
Single storing with using the key MANUAL, see 7.2.
Enter measuring cycle for cyclic storing, see 7.3.2.
Enter time and date as required, see 7.3.4.
Enter time and date of start or end of a measurement as required, see 7.3.5.
Use the keys START and STOP to start and stop a cyclic storing, see 7.3.
Output of memory data to printer or computer
Connect peripheral device via interface cable to socket A1, see manual 5.2.
Set 9600 bd, 8 data bits, 1 stop bit, no parity at peripheral device, see 8.1.
Use the key in function OUTPUT CYCLE to set the output channel ´U´
and, possibly, use the key CHANNEL to set the output format columns ´n´ or
spreadsheet (table) ´t´, see 7.2.2.
Use key PRINT within function MEMORY to output meas. values, see 7.4.2.
6. Cyclic output of measured values to printer or computer
Connect peripheral device via interface cable to socket A1, see manual 5.2.
Set 9600 bd, 8 data bits, 1 stop bit, no parity at peripheral device, see 8.1.
Enter time and date, as required, see 7.3.4.
Program the output cycle within function OUTPUT CYCLE,
with key  output channel ´U´ and, if required, with key CHANNEL
set output format columns ´n´ or spreadsheet (table) ´t´, see 7.2.2.
Use the keys START and STOP to start and stop a cyclic storing, see 7.3.
7. Monitoring of limit values
Enter limit values, see 6.5.
Program measuring cycle, see 7.3.2.
Connect alarm device with alarm module to socket A2, see man. 5.1.2/5.1.3
Use the key in function OUTPUT CYCLE to activate ´U´ for alarm list
output and ´S´ for storing the data of the output channel, see 7.2.2.
Use the keys START and STOP to start and stop a cyclic storing, see 7.3.
8. Evaluation of the measurement
Display max and min values within function MAX or MIN VALUE, see 7.1.2.
13 ALMEMO®5590-2
Initial Operation

3. POWER SUPPLY
3.1 Mains Operation
The universal mains adapter ZB 5090-NA3 for 100 to 260V AC to 12V DC, 2A,
is generally used for the power supply of the measuring instrument. It is
connected to the socket U-DC (7) and is locked by turning it to the right. In
addition, the banana plug with the connection for the protective earth conductor
must for interference suppression be connected to the bare socket beside.
Only in case of exceptions (e.g. in industrial environments) the protective earth
conductor itself can show such high voltage spikes that it is better to avoid its
connection.
The option N involves the installation of the plug-in module ES 5590-N1 with an
integrated switched-mode power supply that allows for a voltage supply from
90 to 260V AC (50 to 60Hz) via a standard mains cable.
Danger! Mains Voltage! The mains plug must whatever
happens be disconnected from the power supply plug-in module
ES 5590-N1 before a plug-in module is installed into or removed
from the system!
3.2 Operation with Rechargeable Battery (Option A)
With the option A, a 7.2V NiCd rechargeable battery with 1.5 Ah will be
installed, which allows, at a current consumption of approximately 21mA, an
uninterrupted operating time of approximately 75 hours. The operating time will
be shorter if selector switch boards (approx. 12mA) are installed or sensors are
connected that require additional current (e.g. humidity sensors FH A646 2mA
or rotating vanes approximately 3mA) or if the serial interface (4mA) is used.
When the voltage of the rechargeable battery has reached 7V a -symbol
starts flashing in the display. An exact determination of the voltage of the
rechargeable battery and an estimation of the remaining operating time are
available with the measuring channel ´Batt´.If the device is only operated with
the rechargeable battery the green lamp SUPP (1) will not be on at all. For
charging the rechargeable battery the 12V mains adapter ZB 5000-NA3 can be
used, which also allows for fully recharging an empty rechargeable battery
within 2 hours. During this process the green lamp will be continuously on for
charge control. When the green lamp flashes, the rechargeable battery is fully
recharged and the charge circuitry switches to trickle charge. As a result, the
power supply can, during buffer operation, remain connected to the measuring
instrument.
ALMEMO®5590-2 14
Power Supply

3.3 External Power Supply (Option U)
If the instrument is intended to have an external voltage supply the power
supply plug-in module with option U (OA 5590-U) and the connecting cable ZB
5090-EK with 2 banana plugs is required. It has a wide input voltage range
from 9 to 36V DC and an electrical isolation allowing that the measuring
instrument can be operated with 12V or 24V mains supply. Further, the mains
adapter ZB 5090-NA3 still allows for operation with mains supply.
3.4 Switch On/Off, Reinitialisation
After the voltage supply has been correctly connected the green control lamp
SUPP, located on the front panel (1), will be on. If a rechargeable battery is
installed the lamp is used for charge control (see 3.2).
For switching on the device the rocker switch (1) must be operated. Then the
red control lamp ON will be on and indicate that the instrument is operational.
When switching off the instrument the red control lamp turns off again.
However, the real time clock continues its operation and all stored data remain
available (see 3.5).
If the device shows an irregular behaviour due to interference influences (e.g.
electrostatic charging or discharged buffering battery) or if incorrect
programming must be avoided, the device can be completely reinitialised.
The reset can be achieved if the key CLEAR is pressed during switch-on. All
internal data such as max, min and average values, and the data memory will
be cleared. Furthermore, cycles, time, date and device address are set to zero
and the conversion rate and atmospheric pressure will be set to the standard
values. However, the device configuration and the sensor programming within
the ALMEMO®connectors will not be affected by the reset.
3.5 Data Buffer
For an uninterrupted power supply of the real time clock and the memory a
NiCd rechargeable battery (2.4V) for buffering is installed, which ensures that
time and date data and all stored values are maintained for several months if
the mains supply is not available. However, to prevent the rechargeable battery
from completely discharging and to avoid the loss of data, the instrument
should be operated with mains supply for a few hours at least once per month.
15 ALMEMO®5590-2
Power Supply

4. CONNECTION OF THE TRANSDUCERS
Any ALMEMO®sensors can be connected to the ALMEMO®input sockets Mxx
of the plug-in modules (8) and (9). For connecting existing sensors it is only
necessary to connect a corresponding ALMEMO®connector.
4.1 Transducers
A detailed description of the comprehensive ALMEMO®sensor range (see
manual section 3) and the connection of existing sensors (see manual section
4) to the ALMEMO®instruments are provided in the ALMEMO®manual. All
standard sensors with ALMEMO®connector usually have the measuring range
and dimension already programmed and can be immediately connected to any
input socket. A mechanical coding ensures that sensor and output modules
can only be connected to the correct sockets. Furthermore, each ALMEMO®
connector has two locking levers that snap in when the insertion into the socket
is established and that prevent a disconnection caused by pulling the cable.
Both levers must be pressed on the sides for disconnecting the connector.
4.2 Measuring Inputs and Extension
The measuring circuit board ES 5590-G1 has 9 input sockets with, at first, the
measuring channels M00 to M08 being allocated to them. However, ALMEMO®
sensors can, if required, provide up to 4 channels so that 36 channels are
available with 9 input sockets. The additional channels can be especially used
with humidity sensors with 4 measuring variables (temperature/humidity/dew
point/mixture ratio) or used for function channels. If required, the sensor can
also be programmed with several ranges or different scaling or, depending on
the pin assignment, 2 or 3 sensors can be combined in one connector (e.g.
TE/Ntc, mV/V, mA/V etc.). The additional measuring channels of a connector
are increased in steps of 10 (e.g. the first sensor has the channels M0, M10,
M20, M30, the second sensor has the channels M1, M11, M21, M31 etc.).
00 01 0502 0603 0704 08
10 11 1512 1613 1714 18
20 21 2522 2623 2724 28
30 31 3532 3633 3734 38
chann.1
chann.2
chann.3
chann.4
M0 M1 M5M2 M6M3 M7M4 M8 A2 A1
ALMEMO®5590-2 16
Connection of the Transducers

All analogue inputs are electrically isolated by using
photovoltaic relays and a potential difference of 50V DC or 60V
AC, at maximum, is permissible between them. However,
sensors combined within one connector and sensors with an
own power supply are electrically connected to each other and
must, therefore, be operated in isolation. The voltage applied
to the measuring inputs must not exceed ±5V (between B,C,D
and A or - respectively).
The cold junction compensation for thermocouple measurement is integrated
in socket M3 of the device.
Up to 8 passive selector switch boards, each with 10 photovoltaic relays, can
be used for an extension of the measuring points.
However, the total number of measuring channels is limited to 99 at maximum.
To be able to adapt the number of sensors to the individual requirements, the
number of channels of the measuring circuit board and the selector switch
boards can be independently configured to 10, 20, 30 or 40 (s.man. 6.10.13.1).
The numbering of measuring points starts and continues from the last
measuring point of the measuring circuit board. The selector switch boards can
be coded from 0 to 7 by the on-board code switches. The duration of a
measuring point scan increases proportionally to the number of measuring
channels. Analogue output cables can only be connected to the master board.
1. With the selector switch boards ES 5590-MF (9) for ALMEMO®flat
connectors the number of measuring points is increased in steps of 10
electrically isolated ALMEMO®inputs. Limit value relay cables can be
connected to all boards. The plug-in module required 2 PCB slots.
2. The selector switch boards ES 5590-MU (5) also have 10 inputs, which
are guided to a 64-pole socket terminal strip. The connection of the
sensors is performed via a 10-fold plug ZA 5590-MU each having 4
screw-type terminals A,B,C,D as with every ALMEMO®connector (see
man. section 4.1). The programming can be individually entered for each
sensor, however, it is stored in a common EEPROM that is located in the
connector. The plug-in module requires only one PCB slot and,
independent from the configuration of the channel number, 10 channels
are only available. For this reason, double sensors and sensors that
require a power supply or an ALMEMO®connector with logic control (e.g.
humidity sensors, rotating vanes etc.) cannot be connected. Two limit value
relays, separately for Max and Min exceeding of all channels, are already
mounted on the board and can be connected via the MU connector.
17 ALMEMO®5590-2
Connection of the Transducers

5. DISPLAY AND KEYBOARD
5.1 Display and Function Selection
The display of the system ALMEMO®5590-2 consists of a LCD dot matrix
display with two lines with 24 characters each. The first line always provides
the device address (MODULE), the selected measuring point with designation
and the current measured value. If no designation is programmed, the
measuring range will be displayed. The second line provides the selected
function. The input channel for scanning and programming of the functions is
independent from the measuring point given in the 1st line.
MODULE MEAS. POINT DESIGNATION MEAS.VALUE DIM
CHANNEL FUNCTION VALUE
Special Operating Conditions
Supply voltage: lower than 7 V: symbol flashes in 1st line
lower 6 V: in the 2nd line,
no other function
Memory output: Output
Sensors that are not connected,
de-activated measuring points,
cleared programming values
Alarm Conditions
are displayed as follows and cause an alarm (see manual 6.3.9):
Sensor breakage: abbr. flashes
NiCr
Overshooting of measuring range: maximum value is displayed
Undershooting of measuring range: minimum value is displayed
Exceeding of limit value: control lamp is on
Measuring without ext. CJC or CJC break.: (cold junction) flashes
CJ-Err
Exceeding of range of values (>65000): flashes
65.000
0001:Temperature+1234.5°C
Un Outp.cycle 00:15:00
LoBat
- - -
ALMEMO®5590-2 18
Display and Keyboard

The basic functions are set by the function selector switch (5). The keys
FUNCTIONand FUNCTIONcan then be used to select, partly, additional
functions. The following table shows how the functions are indicated in the 2nd
line of the display and which special key actions are available:
Function Display Key Action
MEAS. VAL. line 1: 0000:comment 1234.5°C  change meas. point
line 2: device designation ENTER Õenter designation
Fzeroing-> base CLEAR set meas. val. to zero
F, Fzeroing-> zero CLEAR adjustment meas. value
MAX.VALUE 01:Max.value: 1234.5°C  change input channel
F01:Ana-End: 1000.0°C  "
MIN.VALUE 01:Min.value: -123.4°C  "
F01:Ana-Start: 200.0°C  "
AVG.VALUE 01:Avg.value: 333.3°C  "
F01:Avg. mode: CONT  "
F, F01:Count: 11111  "
MEMORY 01:Memory: 23.4°C  change display channel
FMem. free: 00501.9kB
NUMBER Number: 12-001  increment/decrement
MEAS. CYCLE S Meas.cycle 00:30:00 ON/OFF storing on/off
FMeas. rate 10/s CSU
OUTPUT CYCLE U Outp.cycle 01:30:00  output channel
Un Outp.cycle 01:30:00 MEAS.PT. output format
FAddress: 00
RANGE, UNIT 01:Range: NiCr °C  change input channel
F01:Locking 0005  "
LV:MAX 01:Limit max: 1000.0°C  "
F01:Action max Start  "
LV:MIN 01:Limit min: -100.0°C  "
F01:Action min - - -  "
BASE 01:Base: - - -  "
F01:Zero corr: 1.3°C  "
FACTOR 01:Factor: - - - E+0  "
F01:Slope corr - - -  "
TIME Time: 12:34:56 CLEAR meas.time: 00:00:00
FStart: 07:30:00
F, FStop: 18:00:00
DATE Date: 31.12.99
FStart: - - -
F, FStop: - - -
PROGRAM Baud rate: 9600 bd
FAtm.press. 1013mb
F, FHysteresis 10
19 ALMEMO®5590-2
Display and Keyboard