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9031 SPN 1 MOTOR LOCK OR V-SIG LOS ALARM


Problem: SPN1 motor lock or V-sig Los alarm

This type of alarm comes when there is single phasing in the spindle motor.

Remedy: 

1. Check  resistance of spindle motor should be balanced.

Example: Spindle motor resistance: -

RY-0.8 ohm,YB-0.8 ohm,BR-0.8 ohm.

2. Check spindle motor wires for loose connection or brunt.

3. Check input voltage of machine should be RY,YB & BR phase 200VAC.
 


In the picture above, the spindle motor wire is burnt due to SPN1 motor lock or V signal loss alarm occurred 

PLC brand and Software name

 

S.No.PLC’s BrandDeveloped CountrySoftware
01 AB PLCUnited StateRS Logix (RS Logix 5, RS Logix 500
and RS Logix 5000)
02Siemens PLCGermanyStep 5- Micro wins
Step 7- Simatic Manager
03ABB PLCSwitzerlandAutomation Builder
AC010
AC500
04Delta PLCTaiwanWPL Soft
ISP Soft
05Schneider PLCEuropePL7
TwidoSuite
ProWORX 32
06Mitsubishi PLCJapanGx Developer
Gx Works 2
MELSOFT series
07Omron PLCJapanCX-One
CX programmer
08Hitachi PLCJapanEH-150
09General Electric PLCUnited StateDurus
10Honeywell PLCUnited StateHRA
11FATEK PLCTaiwanWinProladder
12BoschGermanyBosch Rexroth