Schneider Electric HRB1684301-01 user manual Input / Output, Digital input applications

Chapter 8 Input / Output

This section describes the meter’s I/O (input/output) features.

The meter is equipped with:

•four (4) digital input ports (S1 to S4), and

•two (2) Form A digital output ports (D1 and D2).

After you wire the meter’s digital I/O ports, you can configure these ports so you can use the meter to perform I/O functions.

Digital input applications

Digital inputs are typically used for monitoring the status of external contacts or circuit breakers. They can also be used for pulse counting or input metering applications, such as WAGES (water, air, gas, electricity, steam) monitoring.

The meter’s digital inputs require an external voltage source to detect the digital input’s on/off state. The meter detects an on state if the external voltage appearing at the digital input is within its operating range.

DANGER

HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH

•Apply appropriate personal protective equipment (PPE) and follow safe electrical work practices. See NFPA 70E in the USA or applicable local standards.

•Turn off all power supplying this device before working on it.

•Always use a properly rated voltage sensing device to confirm that all power is off.

•Do not exceed the device’s ratings for maximum limits.

•Do not use this device for critical control or protection applications where human or equipment safety relies on the operation of the control circuit.

Failure to follow these instructions will result in death or serious injury.

Wiring the digital inputs

+

18 - 30 V AC

12 - 60 V DC

-

18 - 30 V AC

12 - 60 V DC

S1	S2	S3	S4
+ -	+ -	+ -	+ -

+

-

+

-

+	18	- 30 V AC
	12	- 60 V DC
-

18 - 30 V AC

12 - 60 V DC

Related topics

•See “Specifications” on page 27 for electrical characteristics and limits for the digital inputs.

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