Led Descriptions - US drives AC REGEN RGB-0200-0030-N1 Instruction Manual

LED DESCRIPTIONS

Regen Active LED
This LED indicates when the
Under-voltage LED
The under-voltage LED becomes lit when the DC
bus voltage or AC line voltage drop below the
minimum level. This fault is automatically cleared
after the under-voltage condition disappears and the
voltages stabilize.
Over-voltage LED
The over-voltage LED becomes lit when the DC bus
voltage or AC line voltage exceed the maximum
level. This fault is automatically cleared after the
over-voltage condition disappears and the voltages
stabilize.
Phase-loss LED
The phase-loss LED becomes lit when a phase-loss
condition is detected or the AC line voltage drops
below the minimum
automatically cleared after the AC line voltage and
phase stabilize.
Current Limit LED
This LED is lit whenever the DC current is over the
rated level.
Over-temperature
The over-temperature LED becomes lit when the
heatsink temperature exceeds the maximum level.
The first fault is automatically cleared after the
temperature drops to an acceptable level. If a
second fault occurs within a minute, the fault is
latched and clearing it requires a Regen reset.
Over-current LED
This fault is latched and clearing it requires a Regen
reset after a 60 second timeout period.
SMPS LED
The SMPS LED becomes lit when the control supply
drops below normal. The first fault is automatically
cleared after the control power supply stabilizes. If a
second fault occurs within a minute, the fault is
latched and clearing it requires a Regen reset.
LEDs: at Start and Reset
* AC Regen
While the is detecting the line frequency
all LEDs except the Regen Active LED will be lit.
* AC Regen
If the reset line is held active the drive
will rapidly flash (every 100msec) all LEDs (except
LED 1) to indicate that it is waiting for the reset
line to be released.
REGENERATIVE DC COMMON BUS SUPPLY
AC Regen is active
value. This fault
LED 1
LED1 becomes lit when there is charge at the DC
bus -Regen bus or drive bus. To avoid a hazard of
electric shock, after the input and control
power is removed from the
drive connected to it, wait five (5) minutes for
bus capacitors to fully discharge.
Kernel LED
The flashing Kernel LED is the microcontroller
"heartbeat" indicating the CPU is operating
SIZING THE
The following calculations can be used to size the
AC REGEN.
Step 1: Determine the Total Inertia
2 2
wk  wk 
T
M
is
2
Motor inertia in (lb-ft
wk

M
2
Load inertia in (lb-ft
wk

L
Speed reduction ratio:
GR 
Step 2: Determine the Required Braking
Torque
2
wk [

T
TQ

B
308
2
Total inertia in (lb-ft
wk

T
Motor minimum speed in (RPM)
N

1
Motor maximum speed in (RPM)
N 
2
Motor deceleration time in (Sec)
t

d
Step 3: Determine the Required
TQ N

B
HP 
B
5250
Maximum horsepower at maximum motor speed
HP

B
Regen DC current =
Regen DC current =
Regen DC current =
AC REGEN
AC REGEN
2 2
in (lb-ft
[wk L  (GR) ]
2
)
2
)
Output RPM
Input RPM
N N ]

2 1
in (lb-ft)
 t
d
2
)
AC REGEN
2
in (Hp)
for 240Vac drives
HP 2 0 .

B
for 480Vac drives
HP 1 0 .

B
for 575Vac drives
HP 0 8 .

B
13
and the
properly.
2
)