Cabinet - use for any workshop machine control
Cabinet size - depends on size or numbers of control devices use in machine (cnc / traditional )
PLC. programmable logic control
Cabinet size determined points - machine num of moters , starting mathod star delta rev ↩ forw↪, control re alay, growing method, power, cooling ❄️⛄
Required electrical items in cabinet -
Control transformar ,MCB,motar protection, electric drive,olr,conector, cnc, ⚡power eficiancy 16,32 , 45 A , 💡light, temp. Cntrl,
Machanical item - cross rale,din rale , contractor titen 🔧 plate ,drive titen plate ,race way , panal board cabinate
Control box degin required - power cabinet bus bar space colour sleeve heated app space , cable armring earthed, extra hole close, mach. Safty, temp. Meter, alarm circut, 🏴☠️ sign, main power moter line saprate way, weather proof 🎨paint
Colour 🎨 code wire -
Red 🔴- control wire single phase 110v 220 v
Black ⚫ - 415 volt power circut 3phase
🔵Blue - 24v DC
💨White - negative for dc supply
Copper wire earth - moter , cabinet , any metal box connect
Gray -spacial uses
Screen cable - low volt signal 1-5 volt
Flat cable -cnc plc machine for input output
Motar control circuit design -
1. Overload safety - normal to extra current line to draw and conductors heated and
Olr use normal to cutoff
2. Short circuit protection। - HRC fuse use fixed current flow degined 3pole motar use
3. No volt coil protection
4. Safety by isolator - 🆘emergency maintenance main supply stop
5. Control circuit reliability -
Development of a circuit diagram
Analysis of control circuit
LOAD RELAY (OLR)-
1.magnetic OLR
series in circuit coil size compare with motar current (speedly work compare to by metalic relay)
2. bimetalic OLR
Motar load ^ heating coil up and nc contact open
LIMIT SWITCH
1.top rotary
Up to 120 degree trawel object arc
2.push rotary
Vertical touch
3. rotary
Flexible wire to remit control
WIRING USE -
TPN doble dour distribution board
2.cable and bundle mounting hardware
3. commen teminal block , wire terminal
