Daikin MPS015 F Installation And Maintenance Manual page 104

Field Wiring Terminals
All field wiring terminals are spring clamp type, which offer
several advantages over traditional screw-type terminals:
• Spring connections do not require torquing
• Spring connections resist failure due to vibration
• Easily identifiable terminal markers
• Combination spring release and square test ports
Wire connections require inserting ("1" in
wire a round port and clamping the stripped wire by inserting a
flat-bladed screw driver in the adjacent square port ("2").
Figure 87: Terminal Connectors
IM 1058-8 • MAVERICK II ROOFTOP SYSTEMS
Phase Voltage Monitor (PVM)
The phase voltage monitor
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
Figure 87) a stripped
(Restart Delay). The trip and restart delays prevent nuisance
tripping due to rapidly fluctuating power line conditions.
There are two LEDs on the face of the PVM ("1" in
to indicate the following items in
Figure 88: Phase Voltage Monitor
Table 32: LED Indication
Voltage unbalance (relay deenergized)
Other features:
104
(Figure
Status
Normal operation, no faults, relay
energized
Loss of input phase (relay
deenergized)
High or low voltage (relay de-
energized)
Phase reversal (relay deenergized)
Restart delay (fault cleared, PVM
pending restart, relay de-energized)
• Standard 2% to 8% variable voltage unbalance ("3" in
Figure 88).
• Standard 1 to 500 second variable restart delay ("2").
• Standard 1 to 30 second trip delay ("4") (except loss of
phase, which trips at 1 second non-adjustable).
m
aInTenanCe
88) is designed to protect
Figure 88)
Table 32 .
LED Indicator
Green LED - steady on
Red LED - flash twice, off, flash twice,
off, etc.
Red LED - flash twice, off, flash twice,
off, etc.
Red LED - steady on
Red LED - pulse on, off, on, off, etc.
Green LED - pulse on, off, on, off, etc.
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