Technical information

15
Installation
Sizing and Wiring Gauges,” for fuse sizing and wire gauge requirements. "Fuse Wiring"
shows the two possible connection options for a single phase drive. For three phase drives an
additional 20A 600V fuse is necessary for L3. For either option, the fuses (F1, F2, F3, and
F4) must meet the ratings in the table shown on page 17.
Figure 9: Fuse Wiring
Other UL Requirements
The FX drive models DO NOT have overspeed protection. However, at the input voltages
there is no danger of exceeding the maximum mechanical speed specification of the standard
DX motors.
The UL listing is valid for ambient temperatures up to 40°C (104°F). See “Specifications” on
page 157 for thermal derating guidelines for temperatures above 30°C (86°F). These derating
guidelines should be followed for applications using full continuous power.
Overload protection is provided by using a UL recognized thermal switch, class XEWR2.
EMERSON Motion Control motors are protected by the UL recognized thermal switch listed
as number 1 below.
Additional thermal protection is provided in the NPT (National Standard Pipe Thread)
version motor with a second thermal switch (number 2 below).
1. PEPI
155°C (311°F) thermal switch (motor windings)
Type CH-sealed (MA-10049)
UL class XEWR2 File E42562
2. Airpax
80°C ±5°C (176°F ±9°F) (for PVC wire usage)
Series 6600 thermostat P/N 66L 080
UL class XAPX2 File E36687
L1
T
S
R
L2
L1
L2
+
-
TO AC
VOLTAGE
SOURCE
BLACK
WHITE
GREEN
LOGIC POWER
TERMINALS
SAFETY GROUND
TERMINALS
BRIDGE POWER
TERMINALS
MOTOR PHASE
TERMINALS
OPTIONAL BRAKE
SWITCH TERMINALS
L1
T
S
R
L2
L1
L2
+
-
LOGIC POWER
TERMINALS
SAFETY GROUND
TERMINALS
BRIDGE POWER
TERMINALS
MOTOR PHASE
TERMINALS
OPTIONAL BRAKE
SWITCH TERMINALS
F1
F2
EXTERNAL LOGIC AC
POWER JUMPERS
TO AC
VOLTAGE
SOURCE
TO AC
VOLTAGE
SOURCE
LOGIC AC POWER JUMPERED LOGIC AC POWER WIRED SEPERATE
BLACK
WHITE
GREEN
F4
F3
BLACK
WHITE
GREEN
F1
F2