Paradyne IP DSLAM GranDSLAM 4200 - Manual (Page 36)

2. Cabling
2-12 January 2004 4200-A2-GN20-40
Alarm Interface
The alarm interface differs, depending on GranDSLAM 4200 model.
„ Model 4210 – The ALARM interface for the Model 4210 consists of three
contacts that provide access to to the alarm relays that can be used to set off
Major and Minor physical alarms. A 3-position plug provided in the Model 4210
hardware kit is used to connect 16–28 AWG wire to the ALARM terminal block
(see
Table 1-3, Contents of Hardware Kit Shipped with the GranDSLAM 4200,
in Chapter 1, Installation).
„ Models 4220 and 4230 – The ALARM interface for the Models 4220 and 4230
consists of five contacts. Three of the contacts provide access to alarm relays
that that can be used to set off Major and Minor physical alarms. The other two
contacts provide access to a sense circuit that can be used to detect the open
or closed condition of an external alarm relay. See
Figure 2-1, Alarm
Connection Example , for an example of how to connect a Model 4220 to a
Model 4210 so that the Model 4220 can monitor the state of the Model 4210’s
major alarm.
A 5-position plug provided in the Model 4220 and Model 4230 hardware kit is
used to connect 20–28 AWG wire to the ALARM terminal block (see
Table 1-3,
Contents of Hardware Kit Shipped with the GranDSLAM 4200, in Chapter 1,
Installation).
The contacts are closed during normal operation. They open in response to loss of
power, hardware failure, or other alarm conditions. See
Model 4210 ALARM/BITS
Connector or Models 4220/4230 ALARM/BITS Connector in Appendix A,
Connectors and Pin Assignments for more information.
CAUTION:
The ALARM Sense + and Sense – contacts are intended to be connected
to an external alarm relay. Do not apply power to these contacts; doing so
will result in damage to the unit.
Figure 2-1. Alarm Connection Example
ALARM
BITS
ALARM
Sense– Sense+ Minor Common Major
Minor Common Major
To Alarm
Monitoring
System
02-17331
Model 4210
Model 4220