RFL Electronics IMUX 2000 - Multiplexer, Rear Panel Power and Relay Connections

To Next Page

To Previous Page

Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and speciﬁcations without notice.

2.5 MULTIPLEXER, REAR PANEL POWER AND RELAY CONNECTIONS

Figure 2-21 shows the power and signal connectors located on the rear panel of the M-DACS power

I/O module.

Table 2-15 lists the terminal assignments for the input power terminal strip on the right side of the

panel. Table 2-16 lists the terminal assignments for the ALARMS terminal strip that is on the left side

of the panel.

Table 2-23. Terminal assignments, M-DACS shelf input power terminal strip

Terminal Label Description (Refer to Figures 9-2 and 9-3)

RG (RING GEN) For connection to an external ring generator referenced to SIG BAT. Connect one side of the

ring generator to the RING GEN terminal, and the other side to the SIG BAT terminal.

(1)

SB (SIG BAT) For connection to an external signaling voltage source when signaling voltage is required by

one or more channel modules. SIG BAT is normally jumpered to NEGATIVE BAT when

the dc power voltage is the same as the desired signaling voltage. The SIG BAT input may

also be connected to an external loop current generator.

(1)

+R (+BAT R)

Redundant station battery positive.

(2)

-R (-BAT R)

Redundant station battery negative.

(2)

+ (+BAT) Station battery positive. Voltage must match input requirements of power supply module.

- (-BAT) Station battery negative. Voltage must match input requirements of power supply module.

1. To prevent damage to the equipment, the source connected to this input must be externally fused or current-

limited.

2. Redundant station battery connections are only used when the shelf is equipped with a redundant power supply.

The voltage must match the input requirements of the redundant power supply module.

Table 2-24. Terminal assignments, M-DACS shelf rear-panel ALARMS terminal strip

Terminal Label Description

ALERT relay N.O. contact (normally-open).

ALERT NO

ALERT COM ALERT relay COM contact (common).

ALERT NC ALERT relay N.C. contact (normally-closed).

ALARM NO ALARM relay N.O. contact (normally-open).

ALARM COM ALARM relay COM contact (common).

ALARM NC ALARM relay N.C. contact (normally-closed).

M-DACS-T1 RFL Electr

onics Inc.

October 16, 2012 2-61 (973) 334-3100