Honeywell 10303/1/1 Power Supply Distribution Module (PSD)

The Power Supply Distribution Module (PSD) 10303/1/1 module is exclusively used in configurations featuring redundant Central Parts and non-redundant I/O. It serves the purpose of consolidating the output from the power supply units (PSUs) in the redundant Central Parts into a single 5 Vdc supply for the non-redundant I/O section of the system. One power supply distribution module is required for each PSU module.

Figure 1 Schematic diagram of 10303/1/1 module

Additionally, the power supply to the Central Part must pass through this module to ensure an equal voltage drop to both the Central Part and the I/O section. Due to the stringent limits on the 5 Vdc power supply (± 5%), it is crucial to position the PSD modules adjacent to the PSU modules to minimize voltage drop in the wiring. The minimum wire diameter recommended is 2.5 mm² (AWG 14).

It’s important to note that the PSD module should only be exchanged when the power supply to its PSU is switched off.

Technical Data:

The 10303/1/1 module specifications include:

General Type number: 10303/1/1 03501*
Approvals: CE, TÜV, UL
Software versions: All
Space requirements: 4 TE, 3 HE (= 4 HP, 3U)

Power:

Power requirements: None
Max. current: 20 A (module dissipation limit)*
Max. forward voltage drop: 0.55 V
Max. reverse voltage: 30 V

Connector:

Connector type: DIN 41612-H 15 P (faston)
Max. connector current: 10 A per pin

*Note: 10303/1/1 modules without a suffix code have a maximum current rating of 12 A.

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