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

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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

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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.

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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

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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

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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

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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

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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

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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