Cyan Z-Series Engineering and Planning Guide Release 5.0
700-0023-05-00 Rev. 1 © 2013 Cyan, Inc. – All Rights Reserved. Page 131
2.17.9 Electrical
• Low-voltage shutdown -32V (ramping down from a normal-on condition)
• Low-voltage turn-on -36V (ramping up from an under-voltage condition)
• High-voltage shutdown -77V (ramping up from a normal-on condition)
• High-voltage turn-on -72V (ramping down from an over-voltage condition)
2.18 BOSS Termination Module
The BOSS Termination Module (BTM) provides physical termination for the various alarm and
management interfaces supported by the BOSS (BOSS and BOSS2) cards. One BTM connects to both Z77
BOSS shelf control cards simultaneously, and uses two slots at the rear of the Z77 shelf. This allows either
BOSS card to serve as master and access all the physical connections to the system. The BTM contains no
active components, except for relays used for BOSS failover and a small EEPROM for inventory purposes.
Figure 67: Z77 BTM
Ports and connectors on the BTM include five types:
• System alarm outputs
• Environmental alarm inputs and outputs
• Timing inputs and outputs
• Ethernet ports (4)
• RS-232 port (reserved for future use)
Each of the three terminal blocks are removable for eas
ier wiring. The external alarm
inputs and outputs are all software configurable.
The Ethernet interface, labeled MGMT1, provides access to the out-of-band Data
Communication Network (DCN). The DCN is used as a communication network for
network management. These interfaces support VLANs and make use of OSPF
routing on the BOSS cards. The ports are typically connected to an Ethernet switch
used for management networking.
The iLAN Ethernet interfaces provide DCN connectivity and make use of OSPF
routing (iLAN to iLAN connection). The ports are typically connected to an Ethernet
switch used for management networking. The iLAN ports provide IP access to
secondary shelves (Z22, Z33, and other Z77 nodes).
BTM Alarm Inputs
The alarm inputs detect an alarm by an external relay contact closure. The alarm inputs on the BTM have a
maximum current draw of 20 mA.
Alarm Inputs
Maximum
Current Draw
ACO 20 mA
IN1 20 mA
IN2 20 mA
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