AC902S - Uncategorized IFM - Free user manual and instructions
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| Product Type | AC Current Sensor |
| Model | AC902S |
| Brand | IFM |
| Dimensions (W x H x D) | 30 mm x 60 mm x 90 mm |
| Weight | Approx. 150 g |
| Power Supply | 24 V DC, ±10% |
| Current Measurement Range | 0-100 A AC |
| Output Type | Analog 4-20 mA |
| Accuracy | ±1% of reading |
| Operating Temperature | -25°C to +70°C |
| Protection Rating | IP67 |
| Housing Material | Polyamide, UL94 V-2 |
| Mounting | DIN rail or screw fixing |
| Cable Connection | Screw terminals, 1.5 mm² |
| Functions | AC current measurement, overload indication, self-diagnosis |
| Maintenance | Periodic visual inspection; clean with dry cloth |
| Safety | Use only with specified supply voltage; avoid moisture ingress |
| Spare Parts | Sealing caps, terminal blocks, mounting brackets |
| Repairability | Replaceable fuse (internal); consult factory for other repairs |
| General Information | Designed for industrial AC current monitoring; CE, RoHS compliant |
Frequently Asked Questions - AC902S IFM
What is the AC902S used for?
The AC902S is an AC current sensor designed to measure alternating current in industrial applications, providing a 4-20 mA analog output.
What is the power supply requirement?
Requires a 24 V DC power supply with ±10% tolerance. Current consumption is typically 30 mA.
How do I install the AC902S?
Mount on a DIN rail or using two screws (M4). Connect the supply voltage and output wires to the screw terminals. The conductor to be measured passes through the opening.
What is the maximum current it can measure?
The AC902S can measure up to 100 A AC. For higher currents, an external current transformer may be needed.
How accurate is the measurement?
The accuracy is ±1% of the reading under specified conditions.
What does the LED indicate?
A green LED indicates normal operation. A red LED signals an overload or fault condition.
Can the AC902S be used in outdoor environments?
Yes, it has IP67 protection, making it suitable for outdoor use if properly sealed against moisture.
How do I clean the device?
Clean with a dry or slightly damp cloth. Do not use solvents or abrasive cleaners.
What should I do if the sensor is not working?
Check the power supply voltage (18-30 V DC), wiring connections, and ensure the measured current is within range. If the LED is off, the device may be faulty.
Is the AC902S repairable?
The internal fuse can be replaced by a qualified technician. For other repairs, contact IFM support or an authorized service center.
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