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Honeywell FC-SAO-0220m Analog Output Module

Configured for analog current output execution in Honeywell Safety Manager systems, the Honeywell FC-SAO-0220m (SAO-0220M Analog Output Module) provides direct physical and electrical signal conversion for active and passive 0-20 mA and 4-20 mA field loops.

Hardware Specifications

Parameter	Specification
Model	FC-SAO-0220m
Spare Model	SAO-0220M
Brand	Honeywell
Product Type	Analog Output Module
Origin	USA
Weight	0.16 kg
Dimensions	2 x 18.9 x 12.8 cm
Power Consumption	5 V DC, 30 mA
Space Requirements	4 TE, 3 HE (= 4 HP, 3U)
Number of Output Channels	2
Output Signal Type	Active or passive, 0-20 mA / 4-20 mA
D/A Converter Resolution	12-bit
Off Current	< 0.05 mA
Maximum Load Capacitance	100 nF
WDG Input Current	0.5 mA
Loop Powering (Active)	Maximum loop resistance: 600 ohm
Loop Powering (Active)	Maximum output voltage: 30 V DC
External Powering (Passive)	Maximum voltage: 40 V DC
External Powering (Passive)	Minimum voltage drop: <= 7.5 V
Tariff Code	8537101190
Place of Shipment	Xiamen, China

Process Control Current Loop Interface

The FC-SAO-0220m provides two analog output channels for current loop signal generation. The module supports both active loop powering and passive external powering configurations. Therefore, it can interface with different field devices that require 0-20 mA or 4-20 mA control signals.

Honeywell process control modules commonly integrate current loop communication methods such as 4-20 mA HART loop protocol. However, the FC-SAO-0220m specification defines the analog output hardware layer and does not include HART communication functionality.

The module applies channel-level output processing through a 12-bit D/A converter. Additionally, the output circuit manages loop resistance, voltage limitation, and capacitance loading according to the specified electrical parameters.

Frequently Asked Questions

Q: How many analog output channels does the Honeywell FC-SAO-0220m provide?
A: The FC-SAO-0220m provides 2 analog output channels with active or passive 0-20 mA and 4-20 mA operation.

Q: What power supply does the FC-SAO-0220m require from the system?
A: The module requires 5 V DC with a power consumption of 30 mA.

Q: Can the FC-SAO-0220m operate with externally powered field loops?
A: Yes. The module supports passive external powering with a maximum external voltage of 40 V DC and a minimum voltage drop of <= 7.5 V.

Field Installation Guidelines

Install the FC-SAO-0220m according to the Honeywell Safety Manager rack configuration requirements. Verify the module position, backplane connection, and terminal wiring before energizing the system.

Use shielded signal cables for analog current loops when the installation environment contains electrical noise sources. Connect cable shields according to the site grounding standard and avoid parallel routing with high-power cables.

Check loop polarity, external power supply limits, and field device input requirements before commissioning. Confirm that the connected load remains within the specified loop resistance and capacitance limits.

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