7MH4960-2AA01
SIWAREX WP231 calibratable weighing electronic (1 channel) for strain gauge load cells / full bridges (1-4 mV/V) for SIMATIC S7-1200 or stand alone, RS485 and Ethernet-Interface, onboard I/O: 4 DI / 4 DO, 1 AO (0/4...20mA), attention: for calibratable applications please follow the local laws applying in the country of verification! Detailed load cell diagnostics possible with digital junction box SIWAREX DB (7MH5001-0AD20 or 7MH5001-0AD01).
Product category
Technology modulesManufacturer
SIEMENSProduct series
S7-1200| General information | |
|---|---|
| Product type designation | SIWAREX WP231 |
| Firmware version | |
| FW update possible | Yes |
| Installation type/mounting | |
| Rail mounting | Yes; Standard - DIN rail |
| Supply voltage | |
| Rated value (DC) | 24 V |
| permissible range, lower limit (DC) | 19.2 V |
| permissible range, upper limit (DC) | 28.8 V |
| Load voltage L+ | |
| Rated value (DC) | 24 V |
| permissible range, lower limit (DC) | 19.2 V |
| permissible range, upper limit (DC) | 28.8 V |
| Short-circuit protection | Yes |
| Reverse polarity protection | Yes |
| Input current | |
| Current consumption, max. | 200 mA |
| from backplane bus 5 V DC, typ. | 3 mA |
| Power loss | |
| Power loss, typ. | 4.5 W |
| Digital inputs | |
| Number of digital inputs | 4 |
| Digital inputs, parameterizable | Yes |
| Input voltage | |
| Type of input voltage | DC |
| Rated value (DC) | 24 V |
| for signal "0" | 5 V DC at 1 mA |
| for signal "1" | 15 V DC at 2.5 mA |
| Digital outputs | |
| Number of digital outputs | 4 |
| Short-circuit protection | Yes |
| Switching capacity of the outputs | |
| with resistive load, max. | 0.5 A |
| Output voltage | |
| Type of output voltage | DC |
| Rated value (DC) | 24 V |
| Output delay with resistive load | |
| "0" to "1", max. | 25 µs |
| "1" to "0", max. | 150 µs |
| Total current of the outputs | |
| Current per channel, max. | 0.5 A |
| Current per module, max. | 4 A |
| Cable length | |
| shielded, max. | 500 m |
| unshielded, max. | 150 m |
| Analog outputs | |
| Number of analog outputs | 1 |
| Output ranges, current | |
| 0 to 20 mA | Yes |
| 4 mA to 20 mA | Yes |
| Load impedance (in rated range of output) | |
| with current outputs, max. | 600 Ω |
| Cable length | |
| shielded, max. | 100 m |
| Analog value generation for the outputs | |
| Integration and conversion time/resolution per channel | |
| Resolution with overrange (bit including sign), max. | 16 bit |
| Encoder | |
| Connection of signal encoders | |
| For strain gauges (full bridges) with 4-conductor connection | Yes |
| For strain gauges (full bridges) with 6-conductor connection | Yes |
| Resistance of full bridge, min. | 40 Ω; when using SIWAREX IS: 50 ohm for 7MH4710-5BA; 105 ohm when using 7MH4710-5CA |
| Resistance of full bridge, max. | 4 100 Ω |
| Interfaces | |
| Number of RS 485 interfaces | 1; SIWATOOL V7 or SIWAREX DB or SIEBERT remote display |
| 1. Interface | |
| Interface types | |
| RS 485 | Yes |
| 2. Interface | |
| Interface types | |
| RJ 45 (Ethernet) | Yes |
| Number of ports | 1 |
| Interface types | |
| RS 485 | |
| Transmission rate, max. | 115.2 bit/s |
| Cable length, max. | 1 000 m; ≤ 115 kbps, shielded cable |
| Interrupts/diagnostics/status information | |
| Diagnostics function | Yes; Diagnostic alarm |
| Substitute values connectable | Yes |
| Alarms | |
| Diagnostic alarm | Yes; Parameterizable |
| Hardware interrupt | Yes; Parameterizable |
| Diagnoses | |
| Monitoring the supply voltage | Yes |
| Wire break | Yes |
| Short-circuit | Yes |
| Diagnostics indication LED | |
| DIAG LED | Yes |
| for status of the inputs | Yes |
| for status of the outputs | Yes |
| for maintenance | Yes |
| Integrated Functions | |
| Counter | No |
| Load cell | |
| Non-automatic weighing instrument | NAWI |
| Sampling rate | 100 Hz |
| Resolution of input signal | ±1 000 000 parts pro mV/V |
| Common mode voltage, min. | 0 V |
| Common mode voltage, max. | 5 V |
| Cable length, max. | 500 m; when using the SIWAREX 7MH4702-8AG cable |
| Measuring functions | |
| Measuring range | |
| -1 mV/V to +1 mV/V | Yes |
| -2 mV/V to +2 mV/V | Yes |
| -4 mV/V to +4 mV/V | Yes |
| Potential separation | |
| Potential separation digital inputs | |
| between the channels and backplane bus | Yes |
| Potential separation digital outputs | |
| between the channels and backplane bus | Yes |
| Potential separation analog outputs | |
| between the channels and the power supply of the electronics | Yes |
| Isolation | |
| Isolation tested with | 707 V DC (type test) |
| Degree and class of protection | |
| IP degree of protection | IP20 |
| Standards, approvals, certificates | |
| CE mark | Yes; CE marking / EC Declaration of Conformity |
| cULus | Yes; UL 508 (Industrial Control Equipment), CSA C22.2 No. 142 (Process Control Equipment) |
| FM approval | Yes |
| RCM (formerly C-TICK) | Yes |
| KC approval | Yes |
| Ecological footprint | |
| environmental product declaration | Yes |
| Global warming potential | |
| global warming potential, (total) [CO2 eq] | 174.83 kg |
| global warming potential, (during production) [CO2 eq] | 32.12 kg |
| global warming potential, (during operation) [CO2 eq] | 140.99 kg |
| global warming potential, (after end of life cycle) [CO2 eq] | 1.72 kg |
| Ambient conditions | |
| Free fall | |
| Fall height, max. | 1 m; five times, in product package |
| Ambient temperature during operation | |
| horizontal installation, min. | -10 °C |
| horizontal installation, max. | 40 °C |
| vertical installation, min. | -10 °C |
| vertical installation, max. | 60 °C |
| Ambient temperature during storage/transportation | |
| min. | -40 °C |
| max. | 70 °C |
| Air pressure acc. to IEC 60068-2-13 | |
| Operation, min. | 795 hPa |
| Operation, max. | 1 080 hPa |
| Storage/transport, min. | 660 hPa |
| Storage/transport, max. | 1 080 hPa |
| Altitude during operation relating to sea level | |
| Ambient air temperature-barometric pressure-altitude | 1 080 ... 795 hPa (-1 000 ... 5 000 m above sea level) |
| Vibrations | |
| Vibration resistance during operation acc. to IEC 60068-2-6 | 5 ... 8.4 Hz / 3.5 mm, 8.4 ... 150 Hz / 1 g; For wall mounting: 9 ... 29 Hz / 1.5 mm, 29 ... 200 Hz / 5 g |
| Operation, tested according to IEC 60068-2-6 | Yes |
| Shock testing | |
| tested according to IEC 60068-2-27 | Yes; 150 m/s², 11 ms |
| Mechanics/material | |
| Enclosure material (front) | plastic |
| Plastic | Yes |
| Dimensions | |
| Width | 70 mm |
| Height | 100 mm |
| Depth | 75 mm |
| Weights | |
| Weight, approx. | 280 g |
| Approvals / Certificates | |