SP338: Four Wire High Voltage Input Signal Splitter
• Multi-range ±15, ±75, or ±150V input
• 0-20mA, ±10V or 0-10V outputs
• 6-32V DC external power
The SP338 is a high-performance signal splitter that converts one high-level DC voltage input into two isolated proportional control signals. A variety of current and voltage output ranges are supported. Power connects on a terminal block, a rail bus, or both for redundancy.
High-voltage isolation separates the input from power and each output circuit. The isolation protects from surges, reduces noise, and eliminates ground loop errors.
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.
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.
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: ±15V, medium filter.
Output: 4 to 20mA.
Input Ranges and Accuracy
|±0.05% of span
±0.05% of span
±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 Over-Voltage Protection: Bipolar Transient Voltage Suppressers (TVS), 220V working typical.
Bipolar input: 1 part in 50000 (±25000)
Unipolar input: 1 part in 25000
Input Impedance: Greater than 1M ohms.
Input Filter: Selectable digital filtering settings (none, low, medium, and high).
Noise Rejection (with high filter)
Normal mode @ 60Hz: >80dB.
Common mode @ 60Hz: >91dB.
Output (Two Signals, Active)
0 to 10V
0 to 5V
0 to 20mA
4 to 20mA
–0.5527 to +10.5V
–0.27634 to +5.25V
–1.1054 to 21mA
–1.1054 to 21mA
|1 part in 62415
1 part in 31208
1 part in 59240
1 part in 60262
1 part in 62259
1 part in 58596
1 part in 46877
Voltage output: 1K ohms minimum.
Current output: 0-525 ohms for 21mA.
Output Response Time (for step input change)
|Time to reach 98% of final output value (typical)|
Output Ripple: Less than ±0.1% of output span.
Operating temperature: -40 to 75°C (-40° to 167°F).
Storage temperature: -40 to 85°C (-40 to 185°F).
Relative humidity: 5 to 95% non-condensing.
Power Requirement: 6-32V DC external supply, 1.5W max.
Isolation: 1500V AC peak. 250V AC (354V DC) continuous between input, output, and power circuits.
Shock and Vibration Immunity
Vibration: 4g, per IEC 60068-2-64.
Shock: 25g, per IEC 60068-2-27
Approvals: CE compliant. Designed for UL/cUL Class I Division 2 Groups ABCD, ATEX / IECEx Zone 2. ATEX II 3 G Ex nA IIC T4 Gc -40°C < Ta < +80°C.
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.
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 (0.7 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 AgilityTM app for Android
- Single unit accepts ±15V, ±75V, and ±150V DC input ranges
- Input can scale differently for each output
- User-selectable filtering (none, low, med, high)
- Scalable current or voltage output ranges: 0-20mA, 4-20mA, ±5V, ±10V, 0-5V, 0-10V
- Normal or reverse-acting output
- Wide-range DC power input from 6-32V with support for rail power bus and redundancy
- 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 75°C)
- CE compliant. UL/cUL Class I Div 2, ATEX / IECEx Zone 2 approvals