Do-it-Yourself Enclosure Design and Build
Begin by selecting an small enclosure at least 12" deep for most industrial applications. Various sizes are listed bottom of Saginaw page.Saginaw Controls - SCE-30EL3012LPPL 30 x 30 x 12 enclosure
Next select a Fused Disconnect. Remember the current rating will likely be the sum of the breakers you have chosen.
BACO Controls - 0177009LS 25 Amp 3-Pole Body, Handle, Shaft, and
Alignment Cone. Yellow/Red handle
Add a Din mounted Fuse holder and Fuses.
Also add a Distribution Block to each Breaker.
Edison - JM60030-3CR Bussmann Modular J-Fuse Block pg 8-32
JHL10-1 JHL Series 10 Amp
PDB104-3 Edison open power distribution block Pg 9-8
PBC21 Edison Transparent Block Cover
Code requires a UL489 breaker to protect each power component. Eaton offers the widest variety of breakers that we found. Each breaker is sized for max Inrush or rated max current draw, which ever is largest. Select # of poles for each device. UL1077 breakers can be used to protect 24V to PLC's, etc.
Eaton - FAZ-B25/1-NA B CURVE, 25A, 1P, UL489
FAZ-B25/2-NA B CURVE, 25A, 2P, UL489
FAZ-B25/3-NA B CURVE, 25A, 3P, UL489
Thermal magnetic overcurrent protection: three levels, categorized by B, C and D curves in direct relation to continuous rating of the device
B curve magnetic trip point: 3 to 5 times the rated current, typically used
for computers and electronic loads with very low inrush currents (PLC wiring).
C curve magnetic trip point: 5 to 10 times the rated current, typically used
for small transformers, pilot devices, etc.
D curve magnetic trip point: 10 to 20 times the rated current, typically used
for transformers or devices with very high inductive loads.
A communications interface is often required for sealed enclosures.
Mencom - DB09F-RJ45-10LS Panel Interface to DB9F, RJ45 in a 10LS
All wires begin or terminate on a terminal block. We recommend ferrules and labels be used for each wire. Personal preference is for 2 tier blocks.
Phoenix Contact - 3044814 UTTB 4 2 Tier Block
0800886 ENS35N 2 Tier End Clamps
All wire should be conveyed via wire duct within the enclosure. 2" is the minimum you will want to use, any smaller gets tight quick.
Ty-Duct - TYD2X3NPG6 Wire Ducting 2 x 3”
TYD2CPG6 Wire Duct 2” COVER
A 24V Power supply is required for most industrial enclosures. This is not a good area to save money. A supply should have sufficient inductance to ride through a brown-out and always maintain clean DCV for control components. Remember all control is 24 VDC. Inductive loads like 48 DCV powered Servo or Step motors require a switched supply exhibiting large inductance to absorb current spikes.
PULS Power - QS40.481 Power Supply, 960W, 100-240VAC 1PH,
QS10.DNET DeviceNet Power Supply, 192W,
100-240VAC 1PH, 24VDC, 8A
Inexpensive Mini Contactors are always tough to find.
We found one from WEG that has a 10A rating:
WEG - CWCA0-31-00L03 3 NO / 1 NC 10A Relay 24v Control Coil low
Allied - MTW WireALLIED WIRE & CABLE Catalog Pg B10 / 11
MTW Wire (UL 1028 / 1283 / 1284) is the preferred wire for enclosure builds. Stranded wire retains its shape when bent. This makes for a neat and precise appearance. Colors follow the old resistor color code sequence:
- 0 Black - 5 Green
- 1 Brown - 6 Blue
- 2 Red - 7 Violet
- 3 Orange - 8 Gray
- 4 Yellow - 9 White
Select Wire Gauge and Roll Length then contact us for discounted pricing.
Safety made Simple
Safety Light Curtain
Beam spacing is the distance between beams. Offering is as follows:
14mm, 20mm - Finger Safe24mm, 30mm - Hand Safe
40mm, 90mm - Leg and Arm
Select height of protection area. Consult factory on available option: Muting, Blanking or initiation
Leuze - MLC 500 series Select spacing above. Category 4, PLe
MLD 500 series Perimeter guard
Safety RelayLeuze - 50133004 MSI-SR-LC31AR-01 Safety Relay for light curtains
A light beam is emitted that continuously scans 270 degrees from the scanner horizontally or vertically. Areas are programmed as Safe, Warning or Guarded.
Also considered Category 4, PLe (Performance Level e)
Leuze - RSL400 series Select range to 8 Meters and Field Pairs requirements.
Instead of a line scan, Radar protects a 3D area. When motion is sensed within the area the machine is switched to a safe state.. Category 3, PLd protection.
Leuze - LBK-S01-LZ series Select with or without shielding
Doorways require 2 dissimilar switches to achieve Catagory 4, PLe.
NOTE: Exception is RFID / Transponder style switches cannot be defeated.
IDEM Universal Gate Box utilizes transponder technology
IDEM - UGB-KLT Universal Gate Box with Safety Interlocking
The 2 switch method is accomplished using solenoid locking switches
IDEM - KLP-P2L Tongue Switch with Guard Locking
GBA-1 Locking Gate Bolt for use with Tongue Switches K series
HSM Second safety switch is a Hinge Switch
Emergency Stop Buttons
Estops are listed here because IDEM sales its 3 pole, forced guided, safety relays in boxed enclosures to maintain safety conformance standards.
IDEM - ES series (3 pole) Standard Duty E Stop
Rope Pull Switches
A Rope Pull is to be used along conveyors or long machines. When properly tensioned a pull or a break will trigger the safety function. Lesser brands will exhibit temperature fluctuation faults, since mechanical spring tension will vary.
IDEM - GL series Rope Pull Switches
Viper Safety relays offer a wide variety of safety functions including cascading of multiple functions.
IDEM - Viper series Safety Realy with added diagnostics
Trap keys are a non-electric method for locking out machine function. Multiple keys can be utilized by different departments to insure all personnel are accounted for prior to machine reactivation.
IDEM - Skorpion series Trap key protection