B R Industrial Automation X20-C-AT4222 Power Supply Unit Instructions

X20(c)AT4222

General information

The module is equipped with 4 inputs for PT100/PT1000 resistance temperature measurement.

• 4 inputs for resistance temperature measurement
• For PT100 and PT1000
• Configurable sensor type per channel
• Direct resistance measurement
• Configurable 2- or 3- wire connections per module
• Configurable filter time

1.1 Coated modules
Coated modules are X20 modules with a protective coating for the electronics component. This coating protects X20c modules from condensation and corrosive gases.
The modules’ electronics are fully compatible with the corresponding X20 modules.

For simplification purposes, only images and module IDs of uncoated modules are used in this data sheet.

The coating has been certified according to the following standards:

• Condensation: BMW GS 95011-4, 2x 1 cycle
• Corrosive gas: EN 60068-2-60, method 4, exposure 21 days

1.1.1 Starting temperature
The starting temperature describes the minimum permissible ambient temperature in a voltage-free state at the time the coated module is switched on. This is permitted to be as low as -40°C. During operation, the conditions as specified in the technical data  continue to apply.

Information:
It is important to absolutely ensure that there is no forced cooling by air currents in the closed control cabinet, e.g. due to the use of a fan or ventilation slots.

1.2 Other applicable documents
For additional and supplementary information, see the following documents.

Other applicable documents

automation.com/download/10000017209)
MAEMV| Installation / EMC guide

Order data

Supply - Figure](https://manuals.plus/wp-content/uploads/2023/12/B-R -Industrial-Automation-X20-C-AT4222-Power-Supply-Figure.jpg)
X20AT4222| X20 temperature input module, 4 resistance measurement in- puts, Pt100, Pt1000, resolution 0.1°C, 3-wire connections
X20cAT4222| X20 temperature input module, coated, 4 resistance measure- ment inputs, Pt100, Pt1000, resolution 0.1°C, 3- wire connec- tions
| Required accessories
| Bus modules
X20BM11| X20 bus module, 24 VDC keyed, internal I/O power supply con- nected through
X20BM15| X20 bus module, with node number switch, 24 VDC keyed, in- ternal I/O power supply connected through
X20cBM11| X20 bus module, coated, 24 VDC keyed, internal I/O power sup- ply connected through
| Terminal blocks
X20TB12| X20 terminal block, 12-pin, 24 VDC keyed

Table 1: X20AT4222, X20cAT4222 – Order data

Technical description

3.1 Technical data

Short description
I/O module| 4 inputs for Pt100 or Pt1000 resistance temperature measurement
General information
B&R ID code| 0x1BA7| 0xE215
Status indicators| I/O function per channel, operating state, module status
Diagnostics|
Module run/error| Yes, using LED status indicator and software
Inputs| Yes, using LED status indicator and software
Power consumption|
Bus| 0.01 W
Internal I/O| 1.1 W
Additional power dissipation caused by actuators (resistive) [W]| –
Certifications|
CE| Yes
UKCA| Yes
ATEX| Zone 2, II 3G Ex nA nC IIA T5 Gc IP20, Ta (see X20 user’s manual) FTZÚ 09 ATEX 0083X
UL| cULus E115267

Industrial control equipment

HazLoc| cCSAus 244665
Process control equipment for hazardous locations
Class I, Division 2, Groups ABCD, T5
DNV| Temperature: B (0 – 55°C) Humidity: B (up to 100%) Vibration: B (4 g) EMC: B (bridge and open deck)
LR| ENV1
KR| Yes
ABS| Yes
EAC| Yes
KC| Yes| –
Resistance measurement temperature inputs
Input| Resistance measurement with constant current supply for 2- or 3-wire connections
Digital converter resolution| 16-bit
Filter time| Configurable between 1 ms and 66.7 ms
Conversion time|
1 channel| 20 ms with 50 Hz filter
2 – 4 channels| 40 ms per channel with 50 Hz filter
Conversion procedure| Sigma-delta
Output format| INT or UINT for resistance measurement
Order number| X20AT4222| X20cAT4222
---|---|---
Sensor|
Sensor type| Configurable per channel
Pt100| -200 to 850°C
Pt1000| -200 to 850°C
Resistance measurement range| 0.1 to 4500 Ω / 0.05 to 2250 Ω
Input filter| First-order low-pass filter / cutoff frequency 500 Hz
Sensor standard| EN 60751
Common-mode range| >0.7 V
Insulation voltage between channel and bus| 500 Veff
Linearization method| Internal
Measurement current| 250 µA ±1.25%
Reference| 4530 Ω ±0.1%
Permissible input signal| Short-term max. ±30 V
Max. error at 25°C|
Gain| 0.037% 1)
Offset| 0.0015% 2)
Max. gain drift| 0.004%/°C 1)
Max. offset drift| 0.00015%/°C 2)
Nonlinearity| <0.001% 2)
Crosstalk between channels| <-93 dB
Temperature sensor resolution|
Pt100| 1 LSB = 0.1°C
Pt1000| 1 LSB = 0.1°C
Resistance measurement resolution|
G = 1| 0.1 Ω
G = 2| 0.05 Ω
Common-mode rejection|
50 Hz| >80 dB
DC| >95 dB
Standardized range of values for resistance mea- surement|
G = 1| 0.1 to 4500 Ω
G = 2| 0.05 to 2250 Ω
Temperature sensor normalization|
Pt100| -200.0 to 850.0°C
Pt1000| -200.0 to 850.0°C
Temperature measurement monitoring|
Range undershoot| 0x8001
Range overshoot| 0x7FFF
Open circuit| 0x7FFF
General fault| 0x8000
Open inputs| 0x7FFF
Resistance measurement monitoring|
Range overshoot| 0xFFFF
Open circuit| 0xFFFF
General fault| 0xFFFF
Open inputs| 0xFFFF
Electrical properties
Electrical isolation| Channel isolated from bus Channel not isolated from channel
Operating conditions
Mounting orientation|
Horizontal| Yes
Vertical| Yes
Installation elevation above sea level|
0 to 2000 m| No limitation

2000 m| Reduction of ambient temperature by 0.5°C per 100 m
Degree of protection per EN 60529| IP20
Ambient conditions
Temperature|
Operation|
Horizontal mounting orientation| -25 to 60°C
Vertical mounting orientation| -25 to 50°C
Derating| –
Starting temperature| –| Yes, -40°C
Storage| -40 to 85°C
Transport| -40 to 85°C
Order number| X20AT4222| X20cAT4222
---|---|---
Relative humidity|
Operation| 5 to 95%, non-condensing| Up to 100%, condensing
Storage| 5 to 95%, non-condensing
Transport| 5 to 95%, non-condensing
Mechanical properties
Note| Order 1x terminal block X20TB12 separately. Order 1x bus module X20BM11 separately.| Order 1x terminal block X20TB12 separately. Order 1x bus module X20cBM11 separately.
Pitch| 12.5+0.2 mm

Table 2: X20AT4222, X20cAT4222 – Technical data

1)Based on the current measured resistance value.
2)Based on the entire resistance measurement range.

3.2 LED status indicators
For a description of the various operating modes, see section “Additional information – Diagnostic LEDs” in the X20 system user’s manual.

analog inputs.
e + r| Red on / Green single flash| Invalid firmware
1 – 4| Green| Off| The input is switched off
Blinking| Overflow, underflow or open line
On| Analog/digital converter running, value OK

3.3 Pinout
Channels that are not being used should be disabled.

3.4 Connection example

1. 3-wire connections
2. 2-wire connections

3.5 Input circuit diagram
2-wire connections

1. Switch is closed for 2-wire connections.

3-wire connections

Register description

4.1 General data points
In addition to the registers described in the register description, the module has additional general data points.
These are not module-specific but contain general information such as serial number and hardware variant.
General data points are described in section “Additional information – General data points” in the X20 system user’s manual.

4.2 Function model 0 – “3-wire connections” and function model 1 – “2-wire connections”
With this module, the type of connection is selected using function models 0 and 1.

The registers applied are identical for both function models:

Configuration
16| ConfigOutput01 (input filter)| USINT| | | | ●
18| ConfigOutput02 (sensor configuration)| UINT| | | | ●
Communication
0| Temperature01| INT| ●| | |
Resistor01| UINT
2| Temperature02| INT| ●| | |
Resistor02| UINT
4| Temperature03| INT| ●| | |
Resistor03| UINT
6| Temperature04| INT| ●| | |
Resistor04| UINT
28| IOCycleCounter| USINT| ●| | |
30| StatusInput01| USINT| ●| | |

4.3 Function model 254 – Bus controller

Information:
Function model 254 (bus controller) only supports 3-wire connections in the default configuration.

Register| Offset 1)| Name| Data type| Read| Write
---|---|---|---|---|---
Cyclic| Acyclic| Cyclic| Acyclic
Configuration
16| –| ConfigOutput01 (input filter)| USINT| | | |

●

18| –| ConfigOutput02 (sensor configuration)| UINT| | | |

●

Communication
0| 0| Temperature01| INT|

●

| | |
0| Resistor01| UINT
2| 2| Temperature02| INT|

●

| | |
2| Resistor02| UINT
4| 4| Temperature03| INT|

●

| | |
4| Resistor03| UINT
6| 6| Temperature04| INT|

●

| | |
6| Resistor04| UINT
28| –| IOCycleCounter| USINT| |

●

| |
30| –| StatusInput01| USINT| |

●

| |

1. The offset specifies the position of the register within the CAN object.

4.3.1 Using the module on the bus controller
Function model 254 “Bus controller” is used by default only by non- configurable bus controllers. All other bus controllers can use other registers and functions depending on the fieldbus used.
For detailed information, see section “Additional information – Using I/O modules on the bus controller” in the X20 user’s manual (version 3.50 or later).

4.3.2 CAN I/O bus controller
The module occupies 1 analog logical slot on CAN I/O.
4.4 General information
4.4.1 Analog inputs
The module outputs the converted analog values to the registers. Other ranges of values or data types result depending on resistance or temperature measurement.

Information:
Operating channels outside specifications can affect neighboring channels.

4.4.2 Timing
The timing for acquiring measured values is controlled by the converter hardware. All switched-on inputs are converted during each conversion cycle and transferred halfway through the X2X Link cycle.

4.4.3 Conversion time
The conversion time for the channels depends on their use. For the formulas listed in the table, “n” corresponds to the number of channels that are switched on.

4.4.4 Reduced update time
Any inputs that are not needed can be switched off, which reduces the I/O update time. Inputs can also be only switched off temporarily.

Calculating the time saved
The amount of time saved can be calculated with the following formula. And “n” corresponds to the number of inputs that are switched off.

Time saved = n ⋅ (20 ms + filter time)

Examples
Inputs are filtered using a 60 Hz filter.

| Example 1| Example 2| Example 3
---|---|---|---
Switched on inputs| 1| 1 and 3| 1 to 4
Conversion time| 16.7 ms| 73.4 ms| 146.8 ms

4.5 Configuration
4.5.1 Input filter
Name:
ConfigOutput01
The filter time of all analog inputs is defined in this register.

4.5.2 Sensor configuration
Name:
ConfigOutput02
The sensor type of the individual channels is configured in this register.
This module is designed for temperature and resistance measurement. Due to different adjustment values for temperature and resistance, the sensor type must be selected.
By default, all channels are switched on. To save time, individual channels can be switched off (see “Reduced update time” on page 7).

4.6 Communication
4.6.1 Input values of analog inputs
Name:
Temperature01 to Temperature04
Resistor01 to Resistor04
This register contains the analog input values depending on the configured operating mode.

In order for the user to always be supplied with a defined output value, the following must be taken into consideration:

• Up to the first conversion, 0x8000 is output.

• After switching the operating mode until the first conversion:
  ° From “Resistance measurement” to “Sensor type PTxx”: 0x8000
  ° From “Sensor type PTxx” to “Resistance measurement”: 0xFFFF

• If the input is not switched on, 0x8000 is output.

4.6.2 I/O cycle counter
Name:
IOCycleCounter
The cyclic counter increases after all input data has been updated.

4.6.3 Status of the inputs
Name:
StatusInput01
The module’s inputs are monitored. A change in the monitoring status is actively transmitted as an error message.

Bit structure:

Limiting the analog value
In addition to the status information, the analog value is fixed to the values listed below by default in an error state.

Error state| Temperature measurement Digital value on error| Resistance measurement Digital value on error
---|---|---
Open circuit| 32767 (0x7FFF)| 65535 (0xFFFF)
Upper limit value overshot| 32767 (0x7FFF)| 65535 (0xFFFF)
Lower limit value undershot| -32767 (0x8001)| 0 (0x0000)
Invalid value| -32768 (0x8000)1)

32767 (0x7FFF)2)

65535 (0xFFFF)3)

| 65535 (0xFFFF)

1. Default value or channel was disabled in the I/O configuration.
2. After switching off the channel during operation.
3. Value in function model 254 – Bus controller.

4.7 Minimum cycle time
The minimum cycle time specifies how far the bus cycle can be reduced without communication errors occurring.
It is important to note that very fast cycles reduce the idle time available for handling monitoring, diagnostics and acyclic commands.

Minimum cycle time

100 μs

4.8 Minimum I/O update time
The minimum I/O update time specifies how far the bus cycle can be reduced so that an I/O update is performed in each cycle.

Minimum I/O update time

1 input| Equal to the filter time
n inputs| n ⋅ (20 ms + filter time)

Data sheet V 3.23

Documents / Resources

| B R Industrial Automation X20-C-AT4222 Power Supply Unit [pdf] Instructions
X20-C-AT4222, X20-C-AT4222 Power Supply Unit, Power Supply Unit, Supply Unit, Unit
---|---

Read User Manual Online (PDF format)

Read User Manual Online (PDF format)  >>

Download This Manual (PDF format)

Download this manual  >>