879-3020 4PS - Measuring equipment Wago - Free user manual and instructions
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| Product Type | Measuring Module |
| Number of Channels | 4 |
| Dimensions (H x W x D) | 100 x 50 x 70 mm |
| Weight | 150 g |
| Power Supply | 24 V DC |
| Power Consumption | 2 W |
| Input Signal Types | Analog (0-10 V, 4-20 mA) and Digital |
| Output Signal Types | Analog (0-10 V, 4-20 mA) and Digital |
| Measurement Accuracy | ±0.1% of full scale |
| Sample Rate | 100 Hz per channel |
| Communication Interface | Modbus RTU (RS-485) |
| Housing Material | Polyamide (PA) with UL 94 V-0 rating |
| Protection Class | IP20 |
| Operating Temperature | -25 °C to +55 °C |
| Storage Temperature | -40 °C to +85 °C |
| Certifications | CE, UL, cULus |
| Maintenance | Clean with dry cloth; no user-serviceable parts |
| Installation | Snap-fit on DIN rail (35 mm) |
| Warranty | 2 years from date of purchase |
Frequently Asked Questions - 879-3020 4PS Wago
How do I connect the power supply to the 879-3020 4PS?
Connect a 24 V DC power supply to the terminals marked +24V and 0V on the device. Ensure proper polarity and use a fuse if required.
What is the maximum cable length for input signals?
For analog signals, the recommended maximum cable length is 100 meters with twisted-pair shielded cable to minimize noise.
Can I use the device with 4-20 mA sensors?
Yes, the device supports 4-20 mA inputs on all channels. Set the input type via the configuration software or DIP switches.
How do I configure the Modbus address?
Use the rotary switches on the front panel to set the Modbus address (1-247). Refer to the manual for exact switch positions.
What is the sampling rate of the device?
The device samples at 100 Hz per channel simultaneously, providing accurate real-time measurements.
How do I clean the device?
Disconnect power and wipe the housing with a dry, lint-free cloth. Do not use solvents or abrasive cleaners.
What should I do if the device does not power on?
Check the power supply voltage and connections. Ensure the power supply is within 24 V DC ±10%. If the issue persists, contact Wago support.
Can I daisy-chain multiple 879-3020 modules?
Yes, multiple modules can be connected via the Modbus bus. Each module must have a unique address. The total number is limited by the bus load.
What is the accuracy of the analog outputs?
The analog outputs have an accuracy of ±0.1% of full scale at 25 °C, with temperature drift of 0.01% per °C.
Is the device suitable for outdoor use?
No, the device has an IP20 rating and is intended for indoor use in clean, dry environments. Use an enclosure if installed outdoors.
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USER MANUAL 879-3020 4PS Wago
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Product information
Brand : Wago
Model : 879-3020 4PS
Category : Measuring equipment