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Honeywell 900H01-0202 Digital Output Module

Configured for relay-based digital signal switching in the Honeywell ControlEdge HC900 controller system, the Honeywell 900H01-0202 (900H01 Digital Output Module) provides direct physical and electrical execution through eight relay output channels.

Hardware Specifications

Parameter	Specification
Model	900H01-0202
Brand	Honeywell
Product Type	Digital Output Module
Origin	USA
Weight	0.2 kg
Dimensions	13.4 x 3.5 x 5.4 cm
Operating Temp	0 deg C to 60 deg C
Power Consumption	5 VDC: 110 mA max; 24 VDC: 100 mA max
Output Channels	8 relay output channels
Output Device	Electromechanical relay
Relay Configuration	4 Form A relays, 4 Form C relays
Output Voltage Rating	120/240 VAC, 30 VDC
Maximum Relay Current	4 A max per relay
Maximum Leakage Current	1 mA at 350 VDC
OFF to ON Response Time	11 ms max
ON to OFF Response Time	8 ms max
Maximum Power Loading	5 VDC: 40 mA max; 24 VDC: 200 mA max
Tariff Code	8537101190

Process Control Relay Output Characteristics

The Honeywell 900H01-0202 operates as a relay-based output interface within the ControlEdge HC900 platform. It converts controller output commands into electrical switching actions through eight electromechanical relay channels.

The module provides mixed relay configurations with four Form A outputs and four Form C outputs. Therefore, the module supports both normally open switching and changeover contact applications. The relay contacts handle up to 120/240 VAC or 30 VDC loads with a maximum current rating of 4 A per channel.

Additionally, the module design follows Honeywell process control I/O requirements, where channel isolation and controlled switching behavior support discrete field device operation.

Channel Relay Interface and DCS Integration

The 900H01-0202 uses relay output switching rather than semiconductor output devices. As a result, it provides physical contact separation between the controller logic circuit and external field loads.

For Honeywell ControlEdge HC900 applications, the digital output module operates as part of the distributed I/O architecture. The relay channels execute commands from the controller logic while maintaining defined response characteristics for industrial switching tasks.

The module does not provide 4-20 mA HART signal processing because it is designed specifically for discrete relay output functions. However, Honeywell process control systems typically combine digital relay modules with analog and communication modules to manage complete control loops.

Frequently Asked Questions

Q: How many relay outputs are available on the Honeywell 900H01-0202?
A: The module provides eight relay output channels, including four Form A relays and four Form C relays.

Q: What voltage levels can the relay outputs switch?
A: The relay contacts support 120/240 VAC and 30 VDC switching applications with a maximum current of 4 A per relay.

Q: What is the module power consumption from the controller backplane?
A: The module requires up to 110 mA at 5 VDC and up to 100 mA at 24 VDC from the system power supply.

Field Installation Guidelines

• Install the module only within the designated Honeywell ControlEdge HC900 rack and verify backplane compatibility before insertion.
• Confirm field wiring polarity, relay contact type, and load voltage ratings before connecting external devices.
• Separate relay output wiring from low-level analog signal wiring to reduce electrical interference.
• Use appropriate grounding practices for the control cabinet and maintain proper shielding for field cables where required.
• Verify relay contact condition and terminal connections during commissioning.
• Follow controller power isolation procedures before removing or installing the module.

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