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Teknic E3PS12-75 Power Supply Quick Reference

Teknic model E3PS12-75 is a 75 VDC intelligent power supply 
designed to provide the same reliable power and performance as its 
predecessor (3PS12-75) with several added capabilities:

 
 

  Drop-in compatibility with Teknic SSt-3PS12-75.

 

  115 VAC or 230 VAC

*

 nominal input voltage.

 

   Automatic DC bus dump on power down.

 

   Easy adjustment for high, medium or low AC line voltage.

 

   Intelligent regenerative energy management.

 

   Embedded microcontroller.

Introduction

E3PS12-75 Parts

Fuses (x2)

(see below)

DC Output

Connector

AC Input

Connector

Input Voltage

Selector Switch

Status LED

P1

P3

Mounting Hole (x4)

Mounting

Bracket

Circuit Board

Main Capacitor

Transformer

(behind main cap)

The E3PS12-75 should be installed and operated as specified herein. 
Failure to do so may impair or defeat any protections provided by the 
equipment. Please read and follow all instructions before installing or 
operating this device. 

General Safety

The power supply should be mounted behind covers or machine skins 
that can only be opened with a tool. The covers or machine skins 
should be marked as having hazardous voltages within. Alternatively, 
the supply can be mounted behind doors that have a safety interlock 
that removes power to the supply when opened.

The power supply should not be mounted in an area where the 
ambient temperature exceeds 40°C.

Mounting Safety

Replacement Fuses

Description: Fuse, 3AB, 2A, slow blow, 250VAC

Cooper Bussman MDQ-2

Important:

 Use only

 

the fuse type listed above 

regardless of AC line 

voltage used

. Using the wrong fuse can damage the power supply, 

create a fire hazard, cause nuisance circuit breaker trips, and void the 
product warranty.

Rev. M  09/14/15

ANNII

BII

TII

JL

RH

HV

AS

JW

Note: Teknic does not supply or sell 230VAC power cables for this
product. Users operating at 230VAC must build or otherwise source 
this cable. Cable pinout can be found under “Mating Connectors” at right.

*

Housing: Molex/39-01-2100
Terminals: Molex/39-00-0059
Crimp Tool: Molex/638190900
Extractor Tool: Molex/11-03-0044
Cable: 18AWG, 300V, Stranded

Housing: Molex/44441-2002
Terminals: Molex/43375-0001
Crimp Tool: Molex/63811-7200
Cable: 14-16AWG, 600V, Stranded

Mating Connectors

AC Input Connector / Pinout

DC Output Connector / Pinout

1
2
3
4

10

5

7
8
9

6

Pos. 115 VAC

230 VAC*

no connect

no connect

AC IN

no connect

AC IN

GND

no connect

no connect

Jump to 9

Jump to 7

no connect

no connect

Jump to 9

no connect

Jump to 7

GND
AC IN
AC IN

Jump to 10

Jump to 6

1
2

Pos.

Signal

DC Bus (V+)
DC Bus (V-)

1

10

5

6

1

2

wire entry view

wire entry view

Note: Teknic does not supply or sell 

a 230VAC input cable for this product.

Mounting Dimensions

inch (mm)

Note:

 screw head protrudes.09” from

projected surface. This does not affect 

standard mounting surface. 

7.786

(197.76)

4.100

(104.14)

7.155

(181.74)

0

0.255

(6.48)

.300

(7.62)

4.050

(102.87)

4.964

(126.09)

8.087

(205.41)

All Mounting holes 
0.25” dia. thru +/- .02”

0.090

(2.29)

0

0

8.1”

3.9”

5.0”

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