[2]
LED display and check pins
1) LETOFF1(Ground let-off, take-up)
Board
LED No. Name
Color
Use
In normal
status
In abnormal
status
Main cause for error
2: Control board
LED1
EDY
Yellow CPU error monitor
Blinking
ON, OFF Fault or runaway of CPU
LED2
ALMA
Red
Let-off servo alarm
OFF
ON
Faulty servo amplifier
LED3
ALMB
Red
Take-up servo alarm
OFF
ON
Faulty servo amplifier
LED4
CON
Green
Control power (5 V) moni-
tor
ON
OFF
DCPS10 / 5 V is 4.5 V or lower.
3: Servo amplifier
LED1
CHARGE
Red
Main circuit power monitor
ON
OFF
Servo amplifier board detected error.
When the servo amplifier LED 1 is lighting, high voltage remains in the loom.
Before performing maintenance or replacement work, be sure to turn the power OFF and check that LED 1 goes OFF.
Check pin No.
Name
Use
CK1
P5
Power supply
+
5 V
CK2
P15
Power supply
+
15 V
CK3
N15
Power supply -15 V
CK4
GND
Power ground
CK6
ZP
Encoder Z-phase signal
CK7
TEN
Load cell input signal
E3. Electric Components / Let-off Motions for A Towel Loom
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