User manual
Table Of Contents
- Important Safety Instructions
- 1.0 Installation Instructions
- 1.1 Unpacking and Installation
- 1.2 Additional Distribution Mounting and Wiring
- 1.3 Power and Control Wiring
- 1.3.1 Input Power Connections
- Figure 5 Electrical connection location for 23" (584mm) cabinet
- Figure 6 Electrical connection location for 47" (1194mm) cabinet
- Figure 7 Electrical connection location for 47" cabinet with Square D I-Line panelboard
- Table 4 Suggested minimum input wire size data
- Table 5 Main input circuit breaker interrupting rating
- 1.3.2 Junction Box Installation
- Table 6 Main input junction box electrical connections (4 wire)
- Table 7 Main input junction box without transformer electrical connections (5 wire)
- Table 8 Low-voltage (control) junction box dimensions, typical
- Table 9 Main input (power) junction box dimensions, typical
- Figure 8 Low-voltage control junction box connections, typical
- Figure 9 Main input junction box connections, typical
- 1.3.3 System Grounding
- 1.3.4 Grounding Electrode Conductor for Liebert® FPCs With Transformer
- 1.3.5 Output Power Connections
- 1.3.6 Control Wiring Connections
- 1.3.7 Adapter Board
- 1.3.1 Input Power Connections
- 2.0 Equipment Inspection and Startup
- 3.0 Inspection and Startup Checklist
- 4.0 Operating Instructions
- 5.0 Maintenance
Operating Instructions
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4.5 Liebert Distribution Monitoring (If Supplied)
The Liebert Distribution Monitoring (Liebert LDMF) provides the current and voltage for each
branch circuit breaker mounted on the panelboards and the panelboard main circuit breaker. These
measurements are used for reporting the average RMS current, power and other parameters. The
Liebert LDMF detects and annunciates alarm messages and status conditions for each branch circuit
breaker and the panelboard main circuit breaker. The monitored parameters and alarms appear on
the local display (if supplied) and are available for communication to a customer or Liebert
monitoring system.
The Liebert LDMF (if supplied) includes a monochrome LCD, power and alarm LEDs, an audible
alarm and alarm silence and Emergency Power Off push buttons mounted on the front door.
Display Controls and Indicators
• Power Indicator (Green LED) - illuminates when power has been applied to the Liebert Power
product.
• Alarm Status Indicator (Red LED) - illuminates when the Liebert LDMF detects an alarm.
The LED will remain illuminated until the alarm condition is cleared.
• Audible Alarm speaker (represented by the speaker symbol) - a speaker behind the bezel will
sound when the Liebert LDMF records an alarm condition.
• Silence/Reset Push Button - pressing the Silence/Reset button will silence the audible alarm.
Press the button a second time to clear the alarm and turn off the red alarm indicator LED if the
alarm has cleared.
• Emergency Power Off (EPO) Push Button - pressing the EPO button shunt trips the input
circuit breaker to turn the unit off.
• LCD - displays power parameters and alarm data.
• Navigation keys (soft function keys F1 through F4 and Help):
• F1 selects the next Main Breaker, Next Subfeed or Next Branch.
• F2 is the Sequence key. It selects the next set of items at the current level or the next item on
a list.
• F3 can select Subfeed (if supplied and monitored) at the top level or a menu item at a lower
level.
• F4 can select Branch Breakers at the top level or provide a Back function at lower levels.
Pressing the Back key (F4) navigates to the top level (Main) except from the Help screen.
From the Help screen, the Back key navigates to the previous screen.
• Pressing the Help key navigates to the Help screen.
All alarm thresholds for monitored parameters are adjustable by way of the LDMF DB-9 setup port to
match site requirements. All alarms are stored in non-volatile memory to protect against erasure by a
power outage. Alarms must be reset manually after the alarm condition has been corrected. Alarms
may be reset by pushing the Silence/Reset button on the display or through the remote monitoring
system (if used).
The Liebert LDMF monitors and displays the following parameters for the panelboard main circuit
breaker, each branch circuit breaker and subfeed circuit breakers (if supplied and monitored):
• Phase Current
• Percent Load
•kW
•kW-Hours