SP238: Two-Wire High Voltage Input Signal Splitter
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Product short description:
- Multi-range ±15V, ±75V, or ±150V input
- 4-20mA outputs (sink/source)
- 7-32V DC loop/local power
The SP238 model is a high-performance signal splitter that converts one high-level DC voltage input into two proportional isolated 4-20mA control signals. power is received from one or both output loop currents.
Click here to watch a short video highlighting the features of the Acromag SP Series.
- Description
- Features & Benefits
- Tech Papers
- Specs & Data Sheets
- Software
- Accessories
- Additional information
SP238: Two-Wire High Voltage Input Signal Splitter Description
The SP238 model is a high-performance signal splitter that converts one high-level DC voltage input into two proportional isolated 4-20mA control signals. power is received from one or both output loop currents.
Setup is fast and easy with a USB connection to your PC and our Windows software. Acromag’s Agility™ mobile app enables configuration on an Android smart phone or tablet. Software simplifies I/O range scaling, calibration, and advanced signal processing capabilities.
High-voltage isolation separates the input and between the output circuits. The isolation protects from surges, reduces noise, and eliminates ground loop errors.
These rugged instruments withstand harsh industrial environments to operate reliably across a wide temperature range with very low drift. They feature high immunity to RFI, EMI, ESD, and EFT, plus low radiated emissions.
Performance Specifications
IMPORTANT: To prevent ground loop error between a grounded PC and a grounded input signal, Acromag strongly recommends use of a USB isolator like Acromag’s USB-Isolator when configuring a SP230 Series transmitter.
USB Interface
USB Connector: USB Mini-B type socket, 5-pin.
USB Data Rate: 12Mbps. USB v1.1 and 2.0 compatible.
USB Transient Protection: transient voltage suppression on power and data lines.
USB Cable Length: 5.0 meters maximum.
Driver: Not required. Uses built-in Human Interface Device (HID) USB drivers of the Windows operating system.
Input (Passive)
Default Configuration/Calibration
Input: ±150V, medium filtering.
Output: 4 to 20mA.
Input Ranges and Accuracy:
Range                   Accuracy* (typical)
±15V DC                     ±0.05% of span
0-15V DC                     ±0.05% of span
±150V / ±75 DC               ±0.05% of span
0-150V                       ±0.05% of span
0-5V DC                      ±0.05% of span
*Error includes the effects of repeatability, terminal point conformity, and linearization.
Ambient Temperature Effect: Better than ±80ppm/°C (±0.008%/°C).
Zero Scaling Adjust: 0 to 95% of range, typical.
Full Scale Adjust: 5 to 100% of full scale range, typical.
Input Impedance: Greater than 1M ohms.
Input Over-Voltage Protection: Bipolar Transient Voltage Suppressers (TVS), 220V working typical.
Input Resolution
Bipolar input: 1 part in 50000 (±25000).
Unipolar input: 1 part in 25000.
Input Filter: Selectable digital filtering settings (none, low, medium, high).
Input Filter Bandwidth
Normal mode plus digital filtering within the ADC.
Bandwidth (-3dB) varies with digital filter setting from 4Hz without filtering to 0.33Hz with high filtering.
Noise Rejection (Common Mode, High Filter): 138dB @ 60Hz, typical with 100 ohm input unbalance
Output (Two Signals, Passive)
Output Range: 4 to 20mA DC.
Output Compliance
Rload = (Vsupply – 7V) / 0.020A.
Rload = 0 to 850 ohms @ 24V DC.
Output Response Time (for step input change)
Time to reach 98% of final output value (typical)
No filter:Â Â Â Â Â Â Â 88 milliseconds
Low filter:Â Â Â Â Â 100 milliseconds
Medium filter:Â 237 milliseconds
High filter:Â Â Â 1762 milliseconds
Environmental
Operating temperature: -40 to 80°C (-40° to 176°F).
Storage temperature: -40 to 85°C (-40 to 185°F).
Relative humidity: 5 to 95% non-condensing.
Power Requirement: 7-32V DC SELV (Safety Extra Low Voltage), 24mA max.
Isolation: 1500V AC peak. 250V AC (354V DC) continuous isolation between input and output circuits.
Shock and Vibration Immunity
Vibration: 4g, per IEC 60068-2-64.
Shock: 25g, per IEC 60068-2-27.
Electromagnetic Compatibility (EMC) Compliance
Radiated Emissions: BS EN 61000-6-4, CISPR 16.
RFI: BS EN 61000-6-2, IEC 61000-4-3.
Conducted RFI: BS EN 61000-6-2, IEC 61000-4-6.
ESD: BS EN 61000-6-2, IEC 61000-4-2.
EFT: BS EN 61000-6-2, IEC 61000-4-4.
Surge Immunity: BS EN 61000-6-2, IEC 61000-4-5.
Approvals
CE compliant. Designed for UL/cUL Class I Division 2 Groups ABCD, ATEX/IECEx Zone 2.
Physical
General: General-purpose enclosure designed for mounting on 35mm “T-type” DIN rail.
Case Material: Self-extinguishing polyamide, UL94 V-0 rated, color light gray. General-purpose NEMA Type 1 enclosure.
I/O Connectors: Removable plug-in terminal blocks rated for 12A/250V; AWG #26-12, stranded or solid copper wire.
Dimensions: 17.5 x 114.5 x 99.0 mm (0.69 x 4.51 x 3.90 inches).
Shipping Weight: 0.22 kg (0.5 pounds) packed.
- Easy configuration via USB with Windows software or Agility app for Android
- Single unit accepts ±15V, ±75V, and ±150V DC input ranges
- Input scales independently at each output
- User-selectable filtering (none, low, med, high)
- User-configurable output range clamp levels support NAMUR-compliant operation
- Supports reverse-acting (inverse) output
- Supports sink or source output wiring
- Very low 7V two-wire loop burden
- High accuracy, linearity, stability, and reliability
- 1500V isolation
- Space-saving 17.5mm (0.69 inch) design with pluggable terminals for easier wiring
- Shock (25g) and vibration (4g) resistant
- Wide ambient operation (-40 to 80°C)
- CE compliant. UL/cUL Class I Div 2, ATEX / IECEx Zone 2 approvals
Specifications
Manuals
SP238 User Manual (Log in to download the file)
Brochures
Drawings & Diagrams
-
SP230-Config/Cal
Factory custom configuration/calibration service. Specify input type, input/output zero and full-scale values, filtering, and sensor fault settings on order.Select options -
TTBus-Kit: DIN Rail Bus Power Connector
- One kit supports multiple TT330 series transmitters.
- For multiple DT330/351 or SP330 transmitters, one TTBUS-KIT is required for each transmitter to be DC Power wired via the bus rail power connections.
Select options -
TTC-SIP: Software
- Software Interface Package for Acromag DT, ST, TT Series Transmitters and SP, uBSP Series Signal Splitters.
- Includes configuration sofware CD-ROM (5040-xxx), isolator (USB-ISOLATOR) and two USB cable (4001-112, 4001-113) (Recommend one kit per customer.)
- Easy setup and digital calibration via USB with Windows configuration software.
- Download the configuration software only - from the Software Tab
Select options
Additional information
| Weight | 8 oz |
|---|---|
| Dimensions | 4 × 4.75 × 1 in |
| Part Number | SP238-0600: Signal Splitter |
| Configuration | Agility Mobile App, USB Configuration, Windows Software Configuration |
| Product Series | SP230 Series |
| Power | Loop Power |
-
Description
SP238: Two-Wire High Voltage Input Signal Splitter Description
The SP238 model is a high-performance signal splitter that converts one high-level DC voltage input into two proportional isolated 4-20mA control signals. power is received from one or both output loop currents.
Setup is fast and easy with a USB connection to your PC and our Windows software. Acromag’s Agility™ mobile app enables configuration on an Android smart phone or tablet. Software simplifies I/O range scaling, calibration, and advanced signal processing capabilities.
High-voltage isolation separates the input and between the output circuits. The isolation protects from surges, reduces noise, and eliminates ground loop errors.
These rugged instruments withstand harsh industrial environments to operate reliably across a wide temperature range with very low drift. They feature high immunity to RFI, EMI, ESD, and EFT, plus low radiated emissions.
Performance Specifications
IMPORTANT: To prevent ground loop error between a grounded PC and a grounded input signal, Acromag strongly recommends use of a USB isolator like Acromag’s USB-Isolator when configuring a SP230 Series transmitter.
USB Interface
USB Connector: USB Mini-B type socket, 5-pin.
USB Data Rate: 12Mbps. USB v1.1 and 2.0 compatible.
USB Transient Protection: transient voltage suppression on power and data lines.
USB Cable Length: 5.0 meters maximum.
Driver: Not required. Uses built-in Human Interface Device (HID) USB drivers of the Windows operating system.
Input (Passive)
Default Configuration/Calibration
Input: ±150V, medium filtering.
Output: 4 to 20mA.Input Ranges and Accuracy:
Range                   Accuracy* (typical)
±15V DC                     ±0.05% of span
0-15V DC                     ±0.05% of span
±150V / ±75 DC               ±0.05% of span
0-150V                       ±0.05% of span
0-5V DC                      ±0.05% of span
*Error includes the effects of repeatability, terminal point conformity, and linearization.Ambient Temperature Effect: Better than ±80ppm/°C (±0.008%/°C).
Zero Scaling Adjust: 0 to 95% of range, typical.
Full Scale Adjust: 5 to 100% of full scale range, typical.
Input Impedance: Greater than 1M ohms.
Input Over-Voltage Protection: Bipolar Transient Voltage Suppressers (TVS), 220V working typical.
Input Resolution
Bipolar input: 1 part in 50000 (±25000).
Unipolar input: 1 part in 25000.Input Filter: Selectable digital filtering settings (none, low, medium, high).
Input Filter Bandwidth
Normal mode plus digital filtering within the ADC.
Bandwidth (-3dB) varies with digital filter setting from 4Hz without filtering to 0.33Hz with high filtering.Noise Rejection (Common Mode, High Filter): 138dB @ 60Hz, typical with 100 ohm input unbalance
Output (Two Signals, Passive)
Output Range: 4 to 20mA DC.
Output Compliance
Rload = (Vsupply – 7V) / 0.020A.
Rload = 0 to 850 ohms @ 24V DC.Output Response Time (for step input change)
Time to reach 98% of final output value (typical)
No filter:Â Â Â Â Â Â Â 88 milliseconds
Low filter:Â Â Â Â Â 100 milliseconds
Medium filter:Â 237 milliseconds
High filter:Â Â Â 1762 millisecondsEnvironmental
Operating temperature: -40 to 80°C (-40° to 176°F).
Storage temperature: -40 to 85°C (-40 to 185°F).
Relative humidity: 5 to 95% non-condensing.
Power Requirement: 7-32V DC SELV (Safety Extra Low Voltage), 24mA max.
Isolation: 1500V AC peak. 250V AC (354V DC) continuous isolation between input and output circuits.
Shock and Vibration Immunity
Vibration: 4g, per IEC 60068-2-64.
Shock: 25g, per IEC 60068-2-27.Electromagnetic Compatibility (EMC) Compliance
Radiated Emissions: BS EN 61000-6-4, CISPR 16.
RFI: BS EN 61000-6-2, IEC 61000-4-3.
Conducted RFI: BS EN 61000-6-2, IEC 61000-4-6.
ESD: BS EN 61000-6-2, IEC 61000-4-2.
EFT: BS EN 61000-6-2, IEC 61000-4-4.
Surge Immunity: BS EN 61000-6-2, IEC 61000-4-5.Approvals
CE compliant. Designed for UL/cUL Class I Division 2 Groups ABCD, ATEX/IECEx Zone 2.Physical
General: General-purpose enclosure designed for mounting on 35mm “T-type” DIN rail.
Case Material: Self-extinguishing polyamide, UL94 V-0 rated, color light gray. General-purpose NEMA Type 1 enclosure.
I/O Connectors: Removable plug-in terminal blocks rated for 12A/250V; AWG #26-12, stranded or solid copper wire.
Dimensions: 17.5 x 114.5 x 99.0 mm (0.69 x 4.51 x 3.90 inches).
Shipping Weight: 0.22 kg (0.5 pounds) packed.
-
Features & Benefits
- Easy configuration via USB with Windows software or Agility app for Android
- Single unit accepts ±15V, ±75V, and ±150V DC input ranges
- Input scales independently at each output
- User-selectable filtering (none, low, med, high)
- User-configurable output range clamp levels support NAMUR-compliant operation
- Supports reverse-acting (inverse) output
- Supports sink or source output wiring
- Very low 7V two-wire loop burden
- High accuracy, linearity, stability, and reliability
- 1500V isolation
- Space-saving 17.5mm (0.69 inch) design with pluggable terminals for easier wiring
- Shock (25g) and vibration (4g) resistant
- Wide ambient operation (-40 to 80°C)
- CE compliant. UL/cUL Class I Div 2, ATEX / IECEx Zone 2 approvals
-
Tech Papers
What is Circuit Grounding and Why is it Important? - 8500993 (Log in to view the file)Why is circuit grounding important? This whitepaper is Part 1 of a three-part Grounding Electrical Equipment Best Practices series that looks at grounding and its role in protecting personnel, equipment, and ensuring the integrity of electrical signals. In this part, we will review circuit grounding and its importance to you, as well as the US...How Do Ground Fault Circuit Interrupters Work & Protect Us from Shock? - 8500020 (Log in to view the file)How do ground fault circuit interrupters work? This Electrical Ground Rules white paper is Part 2 of a three-part series that takes a look at grounding and its role in protecting personnel and equipment, and ensuring the integrity of electrical signals. In this part, we will examine our use of ground as a means of...How does Ground Work as a Voltage Stabilizer and Transient Limiter? - 8501021 (Log in to view the file)What is the role of ground as a voltage stabilizer and transient limiter? This Electrical Ground Rules whitepaper is Part 3 of a three-part series that takes a look at grounding and its role in protecting personnel and equipment, and ensuring the integrity of electrical signals. Consideration of ground can be very complex and application... -
Specs & Data Sheets
Specifications
Manuals
SP238 User Manual (Log in to download the file)
Brochures
Drawings & Diagrams
-
Software
-
Accessories
-
SP230-Config/Cal
Factory custom configuration/calibration service. Specify input type, input/output zero and full-scale values, filtering, and sensor fault settings on order.Select options -
TTBus-Kit: DIN Rail Bus Power Connector
- One kit supports multiple TT330 series transmitters.
- For multiple DT330/351 or SP330 transmitters, one TTBUS-KIT is required for each transmitter to be DC Power wired via the bus rail power connections.
Select options -
TTC-SIP: Software
- Software Interface Package for Acromag DT, ST, TT Series Transmitters and SP, uBSP Series Signal Splitters.
- Includes configuration sofware CD-ROM (5040-xxx), isolator (USB-ISOLATOR) and two USB cable (4001-112, 4001-113) (Recommend one kit per customer.)
- Easy setup and digital calibration via USB with Windows configuration software.
- Download the configuration software only - from the Software Tab
Select options
-
-
Additional information
Additional information
Weight 8 oz Dimensions 4 × 4.75 × 1 in Part Number SP238-0600: Signal Splitter
Configuration Agility Mobile App, USB Configuration, Windows Software Configuration
Product Series SP230 Series
Power Loop Power
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