IM 926-3 • ROOFPAK APPLIED SYSTEMS 116 www.DaikinApplied.com
Maintenance and Service
Terminal Connectors
The terminals are spring clamp type. They only require
be stripped, which offers several advantages over screw
terminals. The clamping is done by inserting a flat-bladed
screw driver (up to 9/64" wide). See #2 in
.
• Spring connection does not require torquing and resists
vibration
•
Easily identifiable terminal markers
• Built-in test ports on each terminal, up to 2.3 mm
Figure 130: Terminal Connectors
Phase Voltage Monitor (PVM)
The phase voltage monitor (see
protect three-phase loads from damaging power conditions.
A microprocessor-based voltage and phase sensing circuit
constantly monitors the three-phase voltages to detect harmful
power line conditions. When a harmful condition is detected,
its output relay is deactivated after a specified trip delay (Trip
Delay). The output relay reactivates after power line conditions
return to an acceptable level for a specified amount of time
(Restart Delay). The trip and restart delays prevent nuisance
tripping due to rapidly fluctuating power line conditions.
Other features:
•
LED display to indicate status (see #1 in
)
—
Loss of phase
—
High or low voltage
—
Voltage unbalance
—
Phase reversal
—
Rapid cycling
—
Standard 1 to 500 second variable restart delay (see
#2 in
)
•
Standard 2% to 8% variable voltage unbalance (see #3 in
)
•
Standard 1 to 30 second trip delay (see #4 in
Figure 131: Phase Voltage Monitor
1
Standard
1–500 second
variable
restart delay
LED display
Standard 2%–8%
variable voltage
unbalance
4
Standard
1–30 second
trip delay
Summary of Contents for RoofPak RCS Series
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