Lucent Technologies WaveStar OLS 40G, Installation Manual

Page: 169 / 578

Issue 1.0 March 2001
5-13
365-575-389
Installation Manual Wired Cable Installation
Office Alarm Installation (Continued)
OLS Office Alarm
Cable Installation
Procedure During office alarm cable installation, note the following transient current
considerations:
■
Steady-state current for office alarm connections shall not exceed 0.9
amps at 60 volts or 1.8 amps at 30 volts. The maximum transient currents
(20-msec duration) during initial contact closure shall not exceed 9 amps at
60 volts or 18 amps at 30 volts.
■
Use transient noise-suppressing devices to keep within the limits specified
above. These devices may include diodes or contact suppression
networks. If the protection devices are not adequate, use an external buffer
relay.
■
Use suppression devices across any external relay coil being driven by the
OLS or OT. Selection of transient suppression devices shall be made
according to the specific office alarm circuit arrangement.
OLS Office Alarm Connection
Perform the following steps to install the office alarm cable (optional):
1. Route the office alarm cable (see Figure 5-1 on page 5-4) through the right
opening in the side of the OLS shelf from the office alarm panel.
2. Connect the office alarm cable to P29 on the interconnection panel.
3. Inspect the office alarm panel. Use a contact suppression network (refer to
transient current considerations information above) if required.
4. Connect the office alarm cable to the office alarm panel by cutting the cable
to length and wire-wrapping the loose ends onto the panel.
5. Label the connections that are wire-wrapped.
6. Dress and tie the cable.
If installing the office alarm cable on an End Terminal for 4 Bidirectional Optical
Lines or a Repeater for 4 Bidirectional Lines, use the P29 located on the lower
shelf. If the upper shelf is used the ACO function will not work properly.