Interface Parameters; Maintenance Bypass; Fuseless Design; Options - Liebert PDUTM Maintenance Manual

Liebert corporation operation & maintenance power supply sts2, pdutm
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14.2.11 RS-232 Interface Parameters
The service terminal interface parameters are the following settings and cannot be changed.
Table 28
RS-232 settings
Parameter
Interface
Baud Rate
Parity
Number of Data Bits
Number of Stop Bits
Hardware Flow Control
Terminator
Handshaking
Structure
Local Echo

14.2.12 Maintenance Bypass

The STS2/PDU is configured to allow the unit's electronics to be bypassed to either input source for
maintenance without interruption of power to the load.
The STS2/PDU is furnished with key-interlocked maintenance bypass breakers to configure the
bypass.
STS2/PDU units have all electronics isolated from the input, output and bypass connections to allow
safe servicing of any components without access to hazardous voltages when the unit is in mainte-
nance bypass.
See 10.4 - Maintenance Bypass for instructions.

14.2.13 Fuseless Design

All STS2/PDU units are fuseless.

14.2.14 Options

The following options are available for the STS2/PDU:
• Panelboards
• Subfeed Breakers
• K-Factor Transformers
• Surge Suppression System (TVSS)
• Redundant Static Switch Output Breaker
• Programmable Relay Board
• Comms Board w/SiteScan and Modem Interface
• Internal Modem
• Input Contact Isolator Board
• Network Interface Card (NIC)
• Remote Source Selection
• Key Lockout Switch
• Export Crating
See 6.0 - Options for more information.
Setting
RS-232 Using EIA Voltage Levels
9600
None
8
1
Off
<CR> <LF>
Not supported
Full duplex
Off
120
Specifications

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