Overview
Configured for safe 24 VDC output control in the Honeywell Safety Manager system, the Honeywell FC-SDO-0824 (SDO-0824 Safe Digital Output Module) provides eight solid-state output channels for resistive and inductive loads. Each channel uses a source output and supports secondary de-energization through the SMOD arrangement.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | FC-SDO-0824 |
| Base Model | SDO-0824 |
| Brand | Honeywell |
| Product Type | Safe Digital Output Module |
| Dimensions | 4 TE, 3 HE (4 HP, 3U) |
| Operating Temp | Not specified |
| Number of Output Channels | 8 |
| Output Voltage | 24 VDC solid-state source |
| Maximum Output Current | 550 mA |
| Maximum Current at 70 deg C | 350 mA |
| Maximum Lamp Load | 120 mA (2.9 W) |
| Maximum Load Capacitance | 1 uF |
| Voltage Drop | < 2.0 VDC at 500 mA |
| Off-State Current | < 0.1 mA |
| WDG Input Current | 8 mA |
| 5 VDC Consumption | 25 mA |
| Internal 24 VDC Consumption | 25 mA |
| External 24 VDC Consumption | 70 mA without output load |
| Output Protection | Short-circuit proof |
| Output Grouping | 2 groups of 4 channels |
| Secondary De-energization | Independent SMOD per output group |
| Key Coding – Module | Holes A9, C9 |
| Key Coding – Chassis | Large pins A9, C9 |
| Coating | Conformal coated |
| Non-Coated Version | FS-SDO-0824 |
| Approvals | CE, TUV, UL, CSA, FM |
Safe Digital Output and De-Energization
The FC-SDO-0824 provides eight 24 VDC solid-state source outputs. The channels divide into two groups of four. Each group includes an independent secondary means of de-energization through the SMOD function.
The output stage supports both resistive and inductive loads. Therefore, the module can directly control devices such as lamps and solenoids within the specified electrical limits. The output circuit also provides short-circuit protection.
Furthermore, the module limits the maximum output current to 350 mA at 70 deg C. The voltage drop remains below 2.0 VDC at a 500 mA load condition. The off-state current is specified below 0.1 mA.
Frequently Asked Questions
Q: How are the eight output channels arranged?
A: The eight channels are divided into two groups of four. Each group has an independent secondary means of de-energization.
Q: What output load can the FC-SDO-0824 drive?
A: The module provides 24 VDC solid-state source outputs for resistive and inductive loads. The specified maximum output current is 550 mA, with a 350 mA limit at 70 deg C.
Q: Is the FC-SDO-0824 the same as the FS-SDO-0824?
A: No. The FC-SDO-0824 is the conformal-coated version. The supplied data identifies FS-SDO-0824 as the non-conformal-coated version.
Field Installation Guidelines
Install the module only in a compatible Honeywell Safety Manager chassis with the specified A9/C9 key coding.
Verify the module position and chassis coding before insertion. Ensure that the field wiring matches the assigned output channels and that connected loads remain within the specified voltage, current, and capacitance limits.
Route output wiring separately from high-energy conductors where practical. Maintain proper terminal identification and avoid loose conductors that could affect the solid-state output circuit.
For inductive loads, verify the load characteristics and suppression arrangement before energizing the outputs. Also, confirm that the external 24 VDC supply can support the module and connected loads.
Before commissioning, check the output wiring for shorts and verify the required de-energized state of each safety output. Follow the applicable Safety Manager installation and system engineering documentation for cabinet grounding, shielding, and termination practices.
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