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SMC Networks LECSB2-T Series User Manual

SMC Networks LECSB2-T Series
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3. SIGNALS AND WIRING
3 - 16
3.3.2 Power-on sequence
POINT
A voltage, output signal, etc. of analog monitor output may be irregular at power-
on.
(1) Power-on procedure
1) Always use a magnetic contactor for the main circuit power supply wiring (L1/L2/L3) as shown in
above section 3.1. Configure up an external sequence to switch off the magnetic contactor as
soon as an alarm occurs.
2) Switch on the control circuit power supply (L11/L21) simultaneously with the main circuit power
supply or before switching on the main circuit power supply. If the main circuit power supply is not
on, the display shows the corresponding warning. However, by switching on the main circuit power
supply, the warning disappears and the driver will operate properly.
3) The driver receives the SON (Servo-on) 2.5 s to 3.5 s after the main circuit power supply is
switched on. Therefore, when SON (Servo-on) is switched on simultaneously with the main circuit
power supply, the base circuit will switch on in about 2.5 s to 3.5 s, and the RD (Ready) will switch
on in further about 5 ms, making the driver ready to operate. (Refer to (2) in this section.)
4) When RES (Reset) is switched on, the base circuit is shut off and the servo motor shaft coasts.
(2) Timing chart
95 ms
95 ms
RD (Ready)
RES (Reset)
SON (Servo-on)
OFF
ON
OFF
ON
ON
OFF
Base circuit
OFF
ON
power supply
OFF
ON
10 ms
5 ms
10 ms
10 ms
5 ms
10 ms
5 ms
10 ms
(2.5 s to 3.5 s)
SON (Servo-on) accepted
Main circuit
Control circuit
Alarm (OFF)
No alarm (ON)
ALM
(Malfunction)
2.5 s to 3.5 s
(Note)

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SMC Networks LECSB2-T Series Specifications

General IconGeneral
BrandSMC Networks
ModelLECSB2-T Series
CategoryDC Drives
LanguageEnglish