Control Panel Components - Daikin Maverick II MPS062E Installation And Maintenance Manual

Control Panel Components

The following motor control protection is provided.
Table 19: RoofPak Individual Motor Control and Protection
Motor Type Short Circuit
Compressor < 100
MMP
Amps
Compressor > 100
CB
Amps
Condenser Fans MMP
EAF, One Fan CB*
EAF, 2-3 Fans CB*
SAF & RAF with VFD
No Bypass CB*
In Bypass CB
MMP = manual motor protecto
Internal = vendor motor protect
CB = circuit breaker [* FB with MD4
OL = over load relay
Manual Motor Protector (MMP)
If an overload or a fault current interruption occurs, check circuits to
determine the cause of the interruption. If a fault condition exits, examine
the controller. If damaged, replace it to reduce the risk of fire or electrical
shock.
The manual motor protector (MMP) provides coordinated
branch circuit, short circuit protection, a disconnecting means,a
motor controller, and coordinated motor overload protection. A
short circuit indicator with manual reset is mounted alongside
of each MMP as a means to differentiate between a short
circuit and overload trip conditions.
The MMP trip points are factory set. Do not change unless
the motor ampacity changes or the MMP is replaced with
a new device with incorrect setpoint adjustment. Any other
non-authorized trip point or setpoint adjustment voids all or
portions of the unit's warranty. Authorized setpoint adjustments
accomplished as follows
1. For motors with a 1.15 service factor, rotate the arrow
onthe dial to correspond to the motor FLA.
2. For motors with a 1.0 service factor, multiply the
motor FLA by 0.9; then rotate the arrow on the dial to
correspond to that value.
To reset a tripped MMP, clear the trip by rotating the knob
counterclockwise to the OFF (O) position; then rotate knob
clockwise to the ON (I) position. See
www.DaikinApplied.com
Overload On-Off
Internal Contactor
Internal Contactor
VFD Contactor
OL Contactor
Contactor
VFD Contactor
OL Contactor
WARNING
Figure 87.
Other MMP Features:
• Three-position rotary operator: OFF (O)-TRIP-ON (I)
(Figure 87).
• Lockout—tagoutable rotary operator: turn the rotary
operator to OFF (O), slide out the extension arm, and
insert a lockout pin.
• Ambient compensated –20°C to +40°C.
• Single-phase sensitivity: if one phase exceeds setpoint,
all three phases open.
• Trip test: insert a 9/64" screw driver in the test slot
87) to simulate a trip.
Figure 87: Manual Motor Protector
103
Maintenance
IM 991-2 • MAVERICK II ROOFTOP
(Figure