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U-21 displays I/O signals status
The following diagram describes the input and output signals status displayed in U-21.
Diagram 1 Diagram 2
In diagram 1, LED4 and LED5 stand for input signals status, and LED1 and LED2 stand
for output signals status. In diagram 2 there shows the segment No. of each LED.
Input signals status
Segment
Description
Segment
Description
LED4_0
/SPD-A internal set speed selection
LED5_0
/S-ON servo signal
LED4_1
/SPD-B internal set speed selection
LED5_1
/P-CON proportion action command
LED4_2
/C-SEL control mode selection
LED5_2
/P-OT forward prohibit
LED4_3
/ZCLAMP zero clamp
LED5_3
/N-OT reverse prohibit
LED4_4
/INHIBIT prohibit pulse command
LED5_4
/ALM-RST clear the alarm
LED4_5
/G-SEL switch the gain
LED5_5
/P-CL external torque limit at
forward side
LED4_6
/CLR clear the pulse
LED5_6
/N-CL external torque limit at
reverse side
LED4_7
/CHGSTP change the step
LED5_7
/SPD-D internal set speed selection
Output signals status
Segment
Description
Segment
Description
LED1_0
/NEAR near
LED2_0
/COIN positioning completed
LED1_1
/ALM alarm output
LED2_1
/V-CMP speed synchronization
checking
LED1_2
/Z encoder Z phase output
LED2_2
/TGON rotate checking
LED2_3
/S-RDY ready
LED2_4
/CLT torque limit
LED2_5
/VLT speed limit checking
LED2_6
/BK brake lock
LED2_7
/WARN warn
U-22 displays I/O terminals status
The following diagram describes the input and output terminals status:
Diagram 1 Diagram 2
In diagram 1, LED5 stands for input signals status, and LED2 stands for output signals
status. In diagram 2 there shows the segment No. of each LED.
Input terminals
Output terminals
Segment
Description
Segment
Description
LED5_0
Input status of SI1
LED2_0
Output status of SO1
LED5_1
Input status of SI2
LED2_1
Output status of SO2
LED5_2
Input status of SI3
LED2_2
Output status of SO3
LED5_3
Input status of SI4
LED5_4
Input status of SI5
