Emerson Basic Monitor Panel Units Without Monitoring, Power Monitor Panel, Liebert FPC

Operating Instructions

4.2Basic Monitor Panel (Units Without Monitoring)

Alarm Present/Silence

Upon occurrence of a transformer overtemperature condition, the “Alarm Present/Silence” switch will become illuminated and the audible alarm will be activated. Pushing the “Alarm Present/Silence” switch will silence the audible alarm. The cause of the overtemperature condition should be investi- gated and corrected. Possible causes include transformer overload, excessive non-linear loading, inade- quate ventilation, high or low input voltage, or monitoring malfunction. Failure to correct the overtemperature condition may result in an automatic system shutdown due to the second stage of overtemperature sensing. After correction of the alarm condition, the alarm will automatically reset.

Figure 17 Basic monitoring panel

EMERGENCY

POWER

OFF

ALARM

PRESENT

SILENCE

Liebert FPC

FPC16000

4.3Power Monitor Panel

Monitored Parameters - A 4 x 20 character LCD is provided to indicate the input voltages (line-to- line), output voltages (line-to-line and line-to-neutral), output currents (each phase, neutral and ground), output voltage THD, output current THD, crest factor, K-factor, output kVA, kW, kWH, power factor, percent load and output frequency. Pressing the Scan switch will activate the “Autoscan” mode where all monitored parameters are sequentially displayed automatically. Momen- tarily pressing the “Hold/Sequence” switch interrupts the “Autoscan” mode. Pressing the “Hold/ Sequence” switch allows manual selection of the sequentially displayed parameters.

Figure 18 Power monitor panel

OUTPUT VOLTAGE	X – N = 120
X – Y = 208
Y – Z = 208	Y – N = 120
Z – X = 208	Z – N = 120

SCAN

HOLD

SEQUENCE

EMERGENCY POWER OFF

ALARM

PRESENT

SILENCE

Liebert FPC

FPC16001

30