ABB SDCD-POW-4 3ADT315100R1001 DC Governor Power Supply Board

Description

SDCD-POW-4 The Terminal Block with box terminals has 25 terminals for each module, each of which

accommodates one AWG #14 (avg 2.1mm2 cross section) to AWG #22 (avg 0.36mm2 cross

section) wire, or two wires up to AWG #18 (avg. 0.86mm2 cross section). When an external jumper

is used, the wire capacity is reduced from AWG #14 (2.10mm2 ) to AWG #16 (1.32mm2 ).

The I/O Terminal Block with barrier terminals has 18 terminals per module. Each terminal can

accommodate one or two wires up SDCD-POW-4 to AWG #14 (avg 2.1mm2 cross section).

The I/O Terminal Block with Connectors has one 20-pin male connector per module.

The following illustration shows terminal assignments for the 15/2/24 VDC Negative Output

Module.

SDCD-POW-4 If the module is installed on an I/O Terminal Block with Barrier Terminals, an Auxiliary Terminal

Block can be used to provide additional wiring terminals. For the I/O Terminal Block with Wire to

Board Connectors, external connection points are usually be preferred, although an Auxiliary

Terminal Block can be used..

Auxiliary Terminal Blocks have all terminals connected together internally. The Auxiliary

Terminal Block with box terminals has 13 terminals, each of which accommodates one AWG #14

(avg 2.1mm2 cross section) to AWG #22 (avg 0.36mm2 cross section) wire, or two wires up to

AWG #18 (avg. 0.86mm2 cross section). The Auxiliary Terminal Block with barrier terminals has

nine terminals, each of which can accommodate one or two wires up to AWG #14 (avg 2.1mm2

cross section).

The following illustration shows how an SDCD-POW-4 optional Auxiliary Terminal Block with Box Terminals

can be used for power connections when installing this module on an I/O Terminal Block with Box

Terminals.

The Isolated, NO/NC Relay Output Module (IC670MDL930) provides eight isolated outputs. The

outputs consist of six normally–open (Form A) contacts and two normally–open or normally–

closed (Form C) contacts. Six form ‘A’ relays provide the NO outputs while two form ‘C’ relays

provide the NO/NC points

The power that runs the module itself comes from the power supply in the Bus Interface Unit.

An external source of AC and/or DC power must be provided for the loads driven by the contacts.

LEDs

Individual LEDs (logic side), visible through the transparent portion of the module top, indicate the

on/off status of each output. The PWR LED is on when backplane power is present.

Host Interface

SDCD-POW-4 Intelligent processing for this module is performed by the Bus Interface Unit or elsewhere in the

system. This includes configuring features such as output default and fault reporting. The module

has 8 bits (one byte) of discrete output data. A Bus Interface Unit is required to obtain this output

data from the host and/or local processor.

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