HONEYWELL SDI-1624 FC-SDI-1624 module

This product is grounded through the DIN rail to chassis ground. Use zinc-plated yellow-chromate steel DIN rail to assure proper grounding. The use of other DIN rail materials (for example, aluminum or plastic) that can corrode, oxidize, or are poor conductors, can result in improper or intermittent grounding. Secure DIN rail to mounting surface approximately every 200 mm (7.8 in.) and use end-anchors appropriately

To comply with CE Low Voltage Directives (LVD) and UL restrictions, you must use either a Safety Extra Low Voltage (SELV), or a Protected Extra Low Voltage (PELV) power supply to power this module. A SELV supply cannot exceed 30V rms, 42.4V peak, or 60V DC under normal conditions and under single-fault conditions. A PELV supply has the same rating and is connected to protected earth.

The supply voltage is connected via a 4-pin connector 

that accommodates wire sizes up to 2.5 mm2 (14 AWG). You need to connect only one wire to L+ and one wire to L-. Both L+ and L- terminals are internally connected, so you can daisy-chain 24V DC power from the module to other devices in the panel by using the remaining terminal. IMPORTANT Protect the module with a slow-blow fuse. IMPORTANT The module can draw up to 8 A. The controllers need 0.4 A to operate. Up to 7.6 A can be used to source voltage power for inputs and outputs connected to the module. ATTENTION: Do not reverse the L+ and L- terminals or damage to the module will result. There is no reverse polarity protection.

Safety-related Digital Inputs

 The module has 20 digital inputs (DI1…DI20) whose status is indicated via status indicators. LS+ is a voltage source that provides 24V DC for a group of four dry contact inputs. There are five groups on the module. If devices require 24V DC to operate and use the same power source as the module, then wire the outputs of the device directly to inputs on the module.Devices with their own dedicated power supply can also be connected. Connect the reference pole of the external power supply to the L- reference pole of the input.

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