User Manual

TRACER 4102/4202 System Manual Section 3 Engineering Guidelines
612804202L1-1A © 2004 ADTRAN, Inc. 31
Alarm Contacts (Plug-In Terminal Block)
An RF link down condition is indicated with both normally open (NO) and normally closed (NC) alarm
contacts on the rear panel of the TRACER 4102/4202 system. In normal operation, the NC contact is
electrically connected to the common contact (COM) and the NO contact is isolated. When the RF link
drops, the NC contact becomes isolated and the NO is electrically connected to COM. This allows RF
down conditions to be reported to external alarm monitoring systems.
DC Power Connection (Plug-In Terminal Block)
The TRACER 4102/4202 can operate from a supply between 21 and 60 VDC, with either polarity
referenced to ground, and consumes less than 20 Watts (W). Power supplies should be able to provide up to
30 W at the selected voltage. Current required (in Amps) is determined by dividing the power consumed
(in Watts) by the applied voltage (in Volts). For example, at 48 V, TRACER 4102/4202 would draw
approximately 0.417 A (20 W/48 V).
The + terminal of the DC power connection must be connected to the most positive voltage rail, while the
– terminal must be connected to the most negative voltage rail. For example, a +24 V source should be
delivered to the TRACER 4102/4202 by connecting +24 V to the + terminal of the TRACER 4102/4202
power terminal block and ground (the most negative voltage) to the TRACER 4102/4202 – terminal.
Alternately, a -48V supply should be delivered to the TRACER 4102/4202 by connecting ground (the most
positive voltage) to the + terminal of the TRACER 4102/4202 power terminal block and -48 V to the –
terminal.
Fuse
The fuse holder, accessible from the rear panel of the TRACER 4102/4202, accepts a generic 1A, 250 V,
2-inch slow-blo fuse.
Table 7. Alarm Contact Connector Pinout
PIN NAME DESCRIPTION
1 COM Common Contact
2 NO Normally-Open Contact
3 NC Normally-Closed Contact
If the power supply voltages are incorrectly connected to the TRACER 4102/4202
system, the fuse will blow.
Table 8. DC Power Connector Pinout
PIN NAME + Voltage – Voltage
1 - Ground (GND) – Voltage
2 + + Voltage Ground (GND)