Lumel S4AI User manual

1
MODULE OF ANALOG INPUTS
S4AI
USER’S MANUAL

S4AI-07 User Manual 2
Table of contents
1. APPLICATION.................................................................................................................................3
2. S4AI SET ........................................................................................................................................3
3. BASIC REQUIREMENTS, OPERATIONAL SAFETY.......................................................................4
4. INSTALLATION ...............................................................................................................................5
4.1. Installation........................................................................................................................... 5
4.2. External connections diagram............................................................................................. 6
4.3. Side bus.............................................................................................................................. 8
5. OPERATION ...................................................................................................................................9
5.1 Configuration ....................................................................................................................... 9
5.2 RS485 Modbus Slave .......................................................................................................... 9
5.3 Individual Characteristics..................................................................................................... 9
5.4 Virtual channels ................................................................................................................. 10
5.5 Auto-compensation.............................................................................................................11
5.6 Timers................................................................................................................................ 12
5.7 Alarms................................................................................................................................ 13
5.8 Module configuration with E-Con software......................................................................... 14
5.8.1 Configuration parameters.......................................................................................15
5.8.2 S4AI module status ................................................................................................19
5.8.3 Measured values....................................................................................................19
5.8.4 Values of the timers................................................................................................19
6. DIGITAL INTERFACES .................................................................................................................20
6.1 RS485 interface - parameter list......................................................................................... 20
6.2 USB interface - parameter list............................................................................................ 20
6.3 Map of S4AI module registers............................................................................................ 21
7. BEFORE YOU NOTIFY OF A DEFECT.........................................................................................30
8. SOFTWARE UPDATE...................................................................................................................31
9. TECHNICAL DATA........................................................................................................................32
10. ORDERING CODES ...................................................................................................................36

S4AI-07 User Manual 3
1. APPLICATION
S4AI module is designed to measure the standard signal (voltage, current, temperature, resistance,
etc.) and to provide the measured values in a digital form via the MODBUS protocol.
Input signals are divided into two groups of two inputs which are insulated with each other. RS485
interface and USB are isolated from the input, output signals and from the power supply. The module
configuration is possible via the USB PORT or one of the available RS485 interfaces with the use of
free e-Con software. e-Con software is available on the manufacturer's website.
S4AI module has the following features:
analog inputs (current / voltage or resistance / shunt / thermocouple, depending on the
ordering code)
MODBUS protocol on RS485 interface,
timers of lower and higher threshold overrun duration for each input of the module,
Fig. 1: View of S4AI module with
detachable connectors
2. S4AI SET
The complete set of S4AI module includes:
S4AI module 1 pc
User’s manual 1 pc
upper terminal strip (9 terminals) 1 pc
lower terminal strip (6 terminals) 2pcs

S4AI-07 User Manual 4
3. BASIC REQUIREMENTS, OPERATIONAL SAFETY
Meaning of the symbols used in this manual:
Warning!
Warning of potentially dangerous situations. It is especially important to read and
understand these instructions before connecting the device. Failure to meet the
instructions marked with this symbol can result in a serious injury of personnel
and damage to the device.
Caution!
Generally useful notes. Following these instructions ensures easy operation of
the device. The user must take them into account when the operation of the
device does not meet the user’s expectations.
Possible consequences when these instructions are not followed!
In terms of operational safety the meter meets the requirements of EN 61010-1.
Safety instructions:
The assembly and the installation of the electrical connections may be carried out only by a
duly qualified electrician.
The person performing the installation is responsible for the safety of the system in which
devices is to be installed.
Before turning on the module verify the connections.
Removal of the module housing during the warranty period voids the warranty. The module
power supply must be turned off and the input circuits disconnected before opening the
housing.
The device is intended for installation and use in industrial electromagnetic environments.
A switch or a circuit-breaker should be installed in the building or facility. It should be located
near the device, easily accessible to the operator and properly marked.
In the event of damage, the module can be repaired only by the service authorized by the
manufacturer.
Before using the repaired module make sure that it is working properly.
Connection of the module and/or its usage inconsistently with this manual can reduce the
operational safety of the module.

S4AI-07 User Manual 5
4. INSTALLATION
4.1. Installation
The RE62 controller is adapted for installation in a modular installation switchgears on a 35 mm
support rail.
The housing is made of plastic. Housing dimensions are 53 x 110 x 60.5 mm. Detachable terminal
blocks located outside the module allow for connection of power supply, RS482 interface and outputs,
with conductors of cross section up to 2.5 mm2, and also input cables of cross section up to 1.5 mm2.
The dimensions of the module are shown in Fig. 2.
Fig. 2: Dimensions of the module

S4AI-07 User Manual 6
4.2. External connections diagram
Connections the module are shown in Fig. 3. In the event when the module is powered with DC
voltage, the voltage polarity does not matter.
a)
b)
Fig. 3: Electrical connections of S4AI module a) with ±10 V, ±20 mA inputs
b) with Pt100, Pt500, Pt1000 inputs, JKS, ±150 mV thermocouples
Alarm output
ON/ERROR LED
Power supply
USB Port

S4AI-07 User Manual 7
Explanation:
300 V insulation
50 V insulation
Fig. 4: Schematics of S4AI module insulation
Table 1: the meaning of LED signaling
LED
Description
ON / ERROR
(green / red)
- continuous green: normal operation,
- alternating green/red flashes: error or range exceeding of one or more
active inputs.
- continuous red: no main power supply (powered from USB interface),
or an error,
- flashing red: calibration error of the module
Rx (green)
Active data receipt via the RS485 interface.
Tx (red)
Active data transmission via the RS485 interface.
AL1 (red)
Active AL1 alarm output.
AL2 (red)
Active AL2 alarm output.
POWER SUPPLY
INPUT 1
INPUT 2
INPUT 3
INPUT 4
ALARM
OUTPUTS

S4AI-07 User Manual 8
4.3. Side bus
To gain access to the side bus by means of, for example, a flat-blade screwdriver, it is necessary to
break one or both caps located on the side of the module housing.
Fig. 5: Side bus
S4AI module is equipped with only one RS485 interface. Side bus and terminals
19, 20 and 21 are connected to the same RS485 interface.
When the caps are broken, S4AI module may be connected to other LUMEL devices equipped a side
bus. In this way, many S4AI modules can create a multi-channel block of analog inputs.
Fig. 6: Side bus connection

S4AI-07 User Manual 9
5. OPERATION
5.1 Configuration
S4AI module can be configured via MODBUS protocol on two interfaces:
USB: the device responds to any address and requires no power supply (USB power).
If the module is powered only by USB, the analog inputs are switched off, the RS485 interface is
inactive and the LED indicator ON / ERROR lights continuously red.
RS485: the interface must be configured (registers 4004..4007) and the device must be
powered on.
5.2 RS485 Modbus Slave
To use the S4AI module as a MODBUS SLAVE device on RS485 interface, the device must be
configured as follows:
Set the device address (register 4004), baud rate (register 4005), transmission mode (register
4006), upgrade the parameters (register 4007), and save the parameters in non-volatile
memory (register 4036)
Set the input type (registers 4000..4003) and, if required, set the following: the alarms
(registers 4009.. 4018 and 6000..6006), manual compensation (registers 4019..4022) and set
the compensation value (registers 6040..6046), individual characteristic (registers 4023..4026
and 6008..6038), delete the minimum and maximum values ( register 4032), clear the timers
(register 4033) and set thresholds for timers (registers 6048..6062), virtual channels (registers
4043..4054). Save the configuration to non-volatile memory (register 4036).
The measured values, the calculated values in the virtual channels, minimum and maximum
values, and the contents of the timers can be read from the registers 6600..6726.
In the case when the range on one or more inputs is exceeded, the LED indicator ON /
ERROR will light alternately in red and green, and the appropriate error value, according to
the table shown below in this manual, will be set in the status register (register 4037).
5.3 Individual Characteristics
The values measured on each of the active inputs can be scaled in accordance with the two-point
linear characteristics.
To enable this functionality, you must
enter '1' in the appropriate register (registers 4023..4026),
set the individual characteristic points (registers 6008..6038),
scaled measurement results are presented in registers 6632..6646,
save the parameters to non-volatile memory of the module (register 4036).
Fig. 7: Individual characteristic

S4AI-07 User Manual 10
The way the characteristic affects the operation of the module is shown in Fig. 8.
Fig. 8: Effects of the individual characteristics
Example of configuration: shunt with rated current 4A was connected. At rated current the voltage at
the shunt is 150mV. To enable S4AI module calculation of the direct current flowing through the shunt,
the individual characteristics should be set as follows:
X0–0 (lower value for analog input),
X1–150 (upper value for analog input),
Y0–0 (lower scaled value),
Y1–4 (upper scaled value),
Having the individual characteristics set in this way, the value corresponding directly to the value of
the current flowing through the shunt will be presented in the relevant registers.
5.4 Virtual channels
Two virtual channels perform mathematical operations on the values measured by the analog inputs.
Registers 6632 to 6646 contain the measured values scaled by the individual characteristics (if
enabled), or directly the measured values when the individual characteristics function is switched off.
For the first virtual channel the physical analog input involved in the performance of the mathematical
function is selected in the registers 4043..4046, and for the second virtual channel in the registers
4049..4022, as follows:
'0': the channel is off,
'1': the value from the first analog input,
'2': the value from the second analog input,
'3': the value from the third analog input,
'4': the value from the fourth analog input,
'5': the first virtual channel (only available for the second virtual channel).
The performed mathematical function is selected by setting the proper value in the register 4047 for
the first virtual channel, or in the register 4053 for the second virtual channel, as follows:
'0': ADD –adding the values of all the analog inputs assigned to the function,
'1': SUB –subtracting the values of all the analog inputs assigned to the function,
Measured value
Individual
characteristic
The measurement result in
the registers
Control of the alarms
Operation of the timers
Mathematical operations on
virtual channels

S4AI-07 User Manual 11
'2': AVG –calculation of the average value of all the analog inputs assigned to the function,
'3': MIN –selection of minimum value of all the analog inputs assigned to the function,
'4': MAX –selection of maximum value of all the analog inputs assigned to the function,
'5': MUL - multiplying the first assigned analog input by the value of the second argument of
the function (register 4048 for the first virtual channel or 4054 for the second virtual channel)
'6': DIV - dividing the first assigned analog input by the value of the second argument of the
function (register 4048 for the first virtual channel or 4054 for the second virtual channel)
The value of the second argument in the register is the value multiplied x10 (e.g. the value in the
register 15 is a value of argument 1.5). For DIV function the value of 0 for the second argument of the
function is prohibited. Saving the set parameters is done by entering the value 1 into register 4036.
5.5 Auto-compensation
The sensor of PT type:
- In the case of a 3-wire connection it is recommended to use auto-compensation (value of 0 in the
channel relevant register 4019 .. 4022),
- In the case of a 2-wire connection it is recommended to use manual compensation (value of 1 in the
channel relevant register 4019 .. 4022). When manual compensation is activated, the sum of the
resistance of the two supply leads (R1 + R2 in the figure) must be entered into the relevant register
(registers 8020..8023).
Thermocouples:
- In case of automatic compensation the value of 0 must be entered in registers 4019..4022,
- In case of manual compensation, the value of 1 must be entered in registers 4019..4022 and the
compensation value in Celsius in the registers 8020..8023.
PT sensor

S4AI-07 User Manual 12
5.6 Timers
Each analog input with individual characteristics and each virtual channel is monitored by 2 timers:
the first one counts seconds up when the monitored input or virtual channel reaches a value greater
than a defined threshold,
the second one counts seconds up when the monitored input or virtual channel reaches a value lower
than a defined threshold,
thresholds are set in the registers 6048..6062,
the value of each timer is located in the registers 6692 to 6706,
the configuration of the timers should be stored in the non-volatile memory (register 4036).
For example, if you set the lower threshold value of 20 and the upper threshold value of 60, the
values of both timers will count as shown in the figure below:
Fig. 9: Example of timers operation

S4AI-07 User Manual 13
.7 Alarms
S4AI module is equipped with two alarm outputs, which can be configured as follows:
select the monitored input (registers 4009, 4014)
select the operating mode of the alarm output (registers 4010, 4015) as shown in Figure 9,
select the delay time of alarm activation (registers 4011, 4016)
select the delay time of alarm deactivation (registers 4012, 4017)
select maintaining the alarm signaling after the alarm condition is no longer present (registers
4013, 4018)
delete, if necessary, the signaling of the alarm occurrence (register 4034)
save the configuration to the memory (register 4036).
Fig. 10: Alarm outputs operating modes
When the module is turned on, the alarm outputs are automatically switched on
for approximately 1 second.

S4AI-07 User Manual 14
5.8 Module configuration with E-Con software
Fig 11: Window of E-Con software
S4AI module can be configured using the E-Con software. This program is a free application
available from the manufacturer’s website (www.lumel.com.pl). The module must be connected to a
PC via USB or RS485 interface. After starting the program, select the serial port to which the module
is installed. Available serial ports and connection configurations are available in the "Communication”
tab.
Fig 12: Setting connection with S4AI module

S4AI-07 User Manual 15
When connected via the RS485 interface, set the following transmission parameters: the address
(device ID), the speed and mode. Factory settings of RS485 interface are as follows: Address 1,
speed 9600, mode RTU 8N2. For USB connection the following must be set: address 1 (or any
other), speed 115200, mode RTU 8N2.
Fig 13: Configuration reading and saving from e-Con menu
After setting the parameters, select the "connect” button.
Before changing the configuration of the module, it is advisable to read and save the current
configuration to a file to be able to restore the previous configuration. From e-Con application menu it
is possible to save the configuration to a file, to read the file and also export the configuration to a pdf
file.
5.8.1 Configuration parameters
After connection, e-Con automatically read the current configuration from the device. The parameters
available for configuration, as well as a preview of the currently measured values at the inputs, are
available in the right part of the main program window.
Table 2: Configuration parameters in E-Con
Parameter
Description
Range
Default value
Tab RS485 interface parameters
Device address
Device address for MODBUS protocol
1..247
1
RS485 mode
RS485 interface baud rate
8N2
8E1
8O1
8N1
8N2
RS485 speed
RS485 interface baud rate
1200
2400
4800
9600
19200
38400
57600
115200
9600
Apply RS485 settings change
When checked, the communication takes place in
accordance with the new settings after the
settings are saved
-
-
Reading the configuration from the device
Export of the configuration to a pdf
file
Saving the configuration to a file
Reading the configuration from
the file
Saving the configuration to the
device
Information about the connected
device

S4AI-07 User Manual 16
Tabs Input 1, 2, 3, 4 configuration
Measuring input type
Selecting the type of signal fed to the input
Version S4AI-1xxxxx:
Disabled
±10 V
±20 mA
Version S4AI-2xxxxx:
Disabled
PT100
PT500
PT1000
±150 mV
Thermocouple J
Thermocouple K
Thermocouple S
Disabled
Averaging time
Measurements averaging time at the input
0.5 s
1 s
3 s
5 s
10 s
15 s
20 s
0.5 s
Compensation mode
Automatic or manual compensation at the input
Autocompensation
Manual compensation
Autocompensation
Low value timer threshold
Trigger lower threshold of activity timer for the input
-99999.99..99999.99
0
High value timer threshold
Trigger higher threshold of activity timer for the input
-99999.99..99999.99
100.00
Show measured values
Allows for the preview of currently measured values at
the input. See point 5.8.3.
-
-
Delete input min/max values
Allows for clearing minimum and maximum values
saved at the input
-
-
Individual characteristic
Enable/disable scaling of the measured value by user
defined factors
Off
On
Off
Point X0
Definition of individual characteristic (only when
enabled). See point 5.3.
-99999.99..99999.99
0.00
Point Y0
Definition of individual characteristic (only when
enabled). See point 5.3.
-99999.99..99999.99
0.00
Point X1
Definition of individual characteristic (only when
enabled). See point 5.3.
-99999.99..99999.99
1.00
Point Y1
Definition of individual characteristic (only when
enabled). See point 5.3.
-99999.99..99999.99
1.00
Tab Mathematic functions (virtual channel 1, 2)
Argument 1
Selection of input engaged in the performance of
mathematical function. See point 5.4.
Not used
Analog input 1
Analog input 2
Analog input 3
Analog input 4
Virtual channel 1*)
*) for virtual channel 2 only
Not used
Argument 2
Selection of input engaged in the performance of
mathematical function. See point 5.4.
Not used
Analog input 1
Analog input 2
Analog input 3
Analog input 4
Virtual channel 1*)
*) for virtual channel 2 only
Not used
Argument 3
Selection of input engaged in the performance of
mathematical function. See point 5.4.
Not used
Analog input 1
Analog input 2
Analog input 3
Analog input 4
Virtual channel 1*)
Not used

S4AI-07 User Manual 17
*) for virtual channel 2 only
Argument 4
Selection of input engaged in the performance of
mathematical function. See point 5.4.
Not used
Analog input 1
Analog input 2
Analog input 3
Analog input 4
Virtual channel 1*)
*) for virtual channel 2 only
Not used
Function selection
Mathematical function. See point 5.4.
Addition
Subtraction
Average
Minimum
Maximum
Multiplication
Division
Addition
Second argument (ratio)
Second argument for Multiplication or Division
function
-3000.0..3000.0
0.0
Low value timer threshold
Trigger lower threshold of activity timer for the virtual
channel
-99999.99..99999.99
0.00
High value timer threshold
Trigger higher threshold of activity timer for the virtual
channel
-99999.99..99999.99
100.00
Virtual channel 1, 2 value
Preview of the currently calculated value for the virtual
channel, and the saved minimum and maximum values
-
-
Delete channel min/max values
Allows for clearing the minimum and the minimum
values for the virtual channel
-
-
Tab Alarm 1, 2 configuration
Alarm control parameter
Selection of signal to be monitored by alarm
Not used
Analog input 1
Analog input 2
Analog input 3
Analog input 4
Virtual channel 1
Virtual channel 2
Not used
Condition type
Alarm output operating mode. See point 5.7.
H-OFF
H-ON
N-OFF
N-ON
OFF
ON
H-OFF
Low value alarm thres hold
(AL_L)
Lower threshold of the value triggering alarm output.
See point 5.7.
-99999.99..99999.99
0.00
High value alarm threshold
(AL_H)
Higher threshold of the value triggering alarm output.
See point 5.7.
-99999.99..99999.99
50.00
Alarm ON delay
Delay time of alarm output activation after event
occurrence
0..3600 s
0
Alarm OFF delay
Delay time of alarm output deactivation after event is
not longer present
0..3600 s
0
Alarm indication memory
This option allows an alarm indication after the alarm
has stopped. Indication is done by signaling LEDs
AL1/AL2 blinking on the front panel of the module.
Resetting the alarm is done by an option in the Service
Parameters tab-> Delete alarm signaling
-
-
Timer Management tab
The tab allows the user to view the timers assigned to each of the analog inputs, virtual channels, and alarms. In this tab, the user can also reset all or
selected timers.
Service Parameters tab
Module status
Preview of the device status. Displays information such
as:
- state of the alarm
-
-

S4AI-07 User Manual 18
- upper overrun for inputs
- lower overrun for inputs
- errors
See point 5.8.2.
Delete alarms indication
Deleting an alarm indication when the option of alarm
indication after its stop is enabled.
-
-
Reset all min/max values
Deleting the minimum and maximum values for all
inputs and virtual channels
-
-
Factory parameters
Restoring factory settings of the device.
-
-

S4AI-07 User Manual 19
5.8.2 S4AI module status
Fig 14: Preview of S4AI module status in e-Con program.
5.8.3 Measured values
Fig 15: Preview of measured values in e-Con program.
5.8.4 Values of the timers
Fig 16: Preview and reset of upper and lower thresholds overruns duration timers in e-Con program.
Fig 17: Preview and reset of alarm duration timers in e-Con program.

S4AI-07 User Manual 20
6. DIGITAL INTERFACES
6.1 RS485 interface - parameter list
RS485 interface is designed for communication with the module and for configuration of the
module. Communication is done in MODBUS RTU protocol and allows for reading registers
of the module containing the measurement and configuration data. The interface is
characterized by the following parameters:
ID 219 (0xDB)
device address 1...247
baud rate 1.2, 2.4, 4.8, 9.6, 19.2, 38.4, 57.6, 115.2 kbit/s
transmission mode 8N2, 8E1, 8O1, 8N1
protocol Modbus RTU
time to response start 100 ms (reading)
1000 ms (saving)
supported Modbus functions
- 03, 04 registers reading
- 06 saving one register
- 16 saving numerous registers
- 17 device identification
Transmission factory settings: address 1, baud rate 9.6 kbit/s, mode 8N2.
Broadcast address: 253
6.2 USB interface - parameter list
The USB interface is dedicated only to S4AI module configuration.
ID 219 (0xDB)
device address any
baud rate 115.2 kbit/s
transmission mode 8N2
protocol Modbus RTU
time to response start 100 ms (reading)
1000 ms (saving)
supported Modbus functions
- 03, 04 registers reading
- 06 saving one register
- 16 saving numerous registers
- 17 device identification
Broadcast address: 253