Mountz STC 30 Plus v4.3 Operation Instructions Manual

STC 30 Plus v4.3

Operation Instructions

Corporate Headquarters: 1080 North 11th Street, San Jose, CA95112 Phone: [phone] Fax: [phone]

www.mountztorque.com

RoHS

Power Supply for Electric Screwdrivers

(Rev 3.0 9/9/11)

Power

Securely place the power cord into the back of the STC30 Plus. Flip the switch on the back to turn on the unit: Light turns Green.

Connecting Electric Screwdriver

Before connecting the electric screwdriver, make sure the little switch in the lower
bottom right of the STC 30 Plus (v4.3) is positioned in the proper setting (EF or K).
See diagram. Only operate tool in proper “Mode” setting.

EF Mode K Mode

Low = Output is 20VDC Low = Output is 30VDC
High = Output is 30VDC High = Output is 38VDC

Electric Drivers to use in EF Mode: Electric Drivers to use in K Mode:

A4500- 5000 K150-450
SS300-7000
CL2000-7000
EF080-120

Note: There are two models of the STC30 Plus v4.3

Item #145683

Operates: A-Series, CL-Series, EF-Series,

K-Series

Item #145684

Operates: SS-Series

1. Attach cord of the electric screwdriver to the transformer. Make sure notch in plug lines up with the notch in the socket.
Tighten knurled ground ring.

2. Select HIGH & LOW speed button. Select the appropriate speed for your application.

3. Turn driver on and check for proper rotation. FOR-clockwise, REV-counterclockwise.

4. To apply torque, squeeze the lever (For Push-to-Start models place light downward pressure on the nose of the driver). The driver will

automatically stop when the preset torque has been reached.

Soft Start Mode

Press the "sT" button in the lower bottom right. The power light will blink once and turn Yellow, which indicates that you are in Soft Start
mode. There are 4 different time settings for the Soft Start mode which are (0.2, 0.3, 0.5, & 0.6 seconds). When you select this mode it
starts at 0.2 seconds.

The unit has EEP ROM, which allows the settings for the soft start and double hit to be kept once an operator turns off unit and then back
on. Example: If the transformer is set at the 0.6 seconds setting for the soft start mode and the unit is turned off, it will keep that setting
when unit is turned on.

Push “sT” Button Function LED Light

0 Standard Green

1st Soft Start 0.2 Seconds Yellow Light Blinks Once

2nd Soft Start 0.3 Seconds Yellow Light Blinks Twice

3rd SoftStart 0.5 Seconds Yellow Light Blinks Three times
4th Soft Start 0.6 Seconds Yellow Light Blinks Four times
5th Double Hit Mode Red

Note: The settings should be such that the soft start cycle is completed during the free run portion of the cycle before the

fastener begins to torque up.

STC30 Plus (v4.3) Transformer

(Rev 3.0 9/9/11)

EF

K

sT

Soft Start &
Double Hit
function

Make sure the switch is correct position

before operating. Either EF or K mode.

Corporate Headquarters: 1080 North 11th Street, San Jose, CA95112 Phone: [phone] Fax: [phone]

www.mountztorque.com

Page 2

Quick Reminder

Green Light = Operating in Standard mode

Yellow Light = Operating in Soft Start mode

Red Light = Double Hit mode

Double Hit Mode

The Double Hit mode is for very soft joint applications. When an electric screwdriver runs down a fastener and the tool clutches off once
the preset torque is achieved there can be some joint relaxation that can occur. The Double Hit mode has the electric screwdriver perform
a second hit to stabilize the torque for joint relaxation.

Joint relaxation is caused by the surface of part(s) embedding or by "soft parts" such as gaskets, plastics or spongy material, which
collapses under the clamping force created in a torque condition. For Hard Joint applications there is no need to use the
Double Hit mode.

Press the "sT" button continuously until the power light turns Red.
The clutch of the electric driver works twice at the set torque under the "Double Hit" mode. The Double Hit will increase the repeatability
accuracy at the target torque by double checking.

Note!

The STC 30 Plus models that are designed with Double Hit Mode and Soft Start mode features are not functional with any BF­Series electric screwdrivers. The Double Hit Mode and Soft Start mode features are built-in to the “Plus” models of the BF­Series electric screwdrivers.

STC30 Plus (v4.3) Transformer

(Rev 3.0 9/9/11)

Corporate Headquarters: 1080 North 11th Street, San Jose, CA95112 Phone: [phone] Fax: [phone]

www.mountztorque.com

Page 3

OCP (Over Current Protection)

The power will shut down automatically when the current exceeds 12 - 13A. The controller should be reset by turning off the power switch
for one minute and turned back on. If the current is not over the limit, power will turn on.

There is another OCP in a secondary circuit. The power will be disappear for 5 seconds when the current is over 4A over 3 seconds or
when current is over 6A over 0.5 seconds. The transformer recovers automatically. The transformer gives an alarm signal by blinking Green
and Orange color on the LED lights along with beep buzzer sound.

Description Primary OCP Secondary OCP

Detection

Limit current
Time duration

12 ~ 13A

immediately

Condition A Condition B

4A 6A

3 sec.

0.5 sec.

Protection

Whole power shuts
down permanently

Output power disappears for 5 sec.

Protection
Signal

LED

Buzzer

no

no

blinking

Green Orange

Off

blinking

Orange Off

Normal frequent

beep On/Off

Higher Frequent

beep On/Off

Recovery

Turn off the power switch
and on after 1 minute

Auto recovery after 5 sec.

Over Heat Protection

The thermistor will shut down whole power supply if the unit over heats. The controller should be reset by turning off the power switch for
one minute and turned back on. If the current is not over the limit, power will turn on.

Ratcheting Clutch Alarm

An alarm and break system notifies you when the ratcheting clutch occurs with an electric screwdriver. If the tool ratchets continuously 5 or
6 times, the STC-30 Plus will provide a buzzer alarm along with the red LED light Also it will stop the output power for 5 seconds as a
secondary protection.

STC30 Plus (v4.3) Transformer

(Rev 3.0 9/9/11)

Connector and Cables (These cables are included with Scout Screw Counter)

Cable for connecting Scout to the STC30 Plus (Item #14-801120)

1

2
3
4

5
6

Signal Cable

Pin No. Color Function

1 Solid Orange Not Used
2 White/Orange Stop
3 Blue Start
4 White/Blue DC(-)
5 Green Driver Lock
6 White/Green Driver Lock
7 Brown N/A
8 White/Brown Not Used

RJ-11

Modular Jack

2M

1.5M

Corporate Headquarters: 1080 North 11th Street, San Jose, CA95112 Phone: [phone] Fax: [phone]

www.mountztorque.com

Page 4

1

5

4

3

2

1: Motor (+)
2: Limit
3: Motor (-)
4: Drive
5: Ground

Output Pin Connection

Note!

Do not connect any other electric screwdriver that’s not
listed to be used with the transformer. It may cause
electric shock, fire, damage to the tools or operator
injury.

Input voltage selection

110V

110VAC Selected

230V

230VAC Selected

110V

230

Timing chart for Start / Stop Signal

Start

Stop

0.25 Sec

7

8

PC817

STC30 Plus (4.0)

12 VDC (+)

PC817

STC30 Plus (v4.3) Transformer

(Rev 3.0 9/9/11)

Interface for Start / Stop Signal & Driver Lock

Torque Up (Orange)

Run (Orange stripe)

1

2
3

4
5

6

DC(-) Blue

Driver Lock (Blue stripe)

Green stripe

PLC connections

Electric Screwdriver

STC30 Plus

Scout
Screw Counter

PLC

PLC

Signal Out

Cycle End
NG
OK
Buzzer

Signal In

Cycle Start

Driver Lock

Signal In

Driver Lock

Signal Out

Fastening Start
Fastening Stop

Corporate Headquarters: 1080 North 11th Street, San Jose, CA95112 Phone: [phone] Fax: [phone]

www.mountztorque.com

Page 5

Green

Note: Pin 7 & 8 are not used.

STC30 Plus (v4.3) Transformer

(Rev 3.0 9/9/11)

U-3B Interface Converter (Accessory)

The PLC interface converter provides three types of signals
by converting the open collector signal from STC 30 Plus v4.3 &
STC 40.

Model: U-3B
Item #145753
Size (WxDxH): 3" x 2 3/8" x 1"
Weight 3.6 oz

Types of Signals:

Open Collector by Opto-Coupler (Reversed)
Relay Contact (Normal Close)
Relay Contact (Normal Open)

Opto Coupler: 12-24V (10mA max)
Relay Contact: 30VDC 1a Max

Relay power off
when not use

Corporate Headquarters: 1080 North 11th Street, San Jose, CA95112 Phone: [phone] Fax: [phone]

www.mountztorque.com

Page 6

STC30 Plus (v4.3) Transformer

(Rev 3.0 9/9/11)

Corporate Headquarters: 1080 North 11th Street, San Jose, CA95112 Phone: [phone] Fax: [phone]

www.mountztorque.com

Page 7

STC30 Plus (v4.3) Transformer

(Rev 3.0 9/9/11)

Corporate Headquarters: 1080 North 11th Street, San Jose, CA95112 Phone: [phone] Fax: [phone]

www.mountztorque.com

Page 8

Mountz Calibration & Repair Services

Mountz Inc. features an experienced calibration and repair staff. Our trained technicians can calibrate and repair most any
tool. Mountz provides rapid service with quality that you can trust as we offer three state-of-the-art calibration lab and repair
facilities that can calibrate up to 20,000 lbf.ft.

With over 45 years of experience, Mountz’s in-depth knowledge of torque is reflected in our tool’s craftsmanship and our abili­ty to provide solutions to both common and uncommon torque applications. We perform calibrations in accordance with
ANSI/NCSL-Z540. Mountz is dedicated solely to the manufacturing, marketing and servicing of high quality torque tools.

Mountz is an ISO 9001 certified and ISO 17025 accredited company.

Tool Service & Repair Capability

- Torque Wrench Calibration: Click Wrench, Dial Torque Wrench, Beam Wrench, Cam-Over & Break-Over Wrench

- Torque Screwdrivers: Dial, Micrometer, Preset & Adjustable

- Torque Analyzers/Sensors: All brands

- Electric Screwdrivers: All brands

- Air Tools: All brands
Impact Wrenches, Drills, Pulse Tools, Grinders, Percussive Tools, Air
Screwdrivers, Nutrunners, DC Controlled Nutrunners

- Torque Multipliers: All brands

Mountz Torque Testers and Calibration Equipment

Torque tools go out of calibration with use. Calibrating a torque tool is a
fine-tuning process of bringing the tool back within its tolerance. Torque
testers can also be used for quick tools tests on the line or in the lab to
determine whether torque tools are holding a given setting.

A regular torque tool calibration and re-calibration guarantees the operator
repeatable accuracy and adherence to international standards. Torque
testing also ensures torque equipment is operating to peak performance
and can highlight potential tooling problems before they arise perhaps due
to tool wear or broken components.

Controlling torque is essential for companies to ensure their product's
quality, safety and reliability isn't compromised. The failure of a three-cent
fastener that isn’t properly tightened can lead to catastrophic or latent fail­ures. Fasteners that are insufficiently torqued can vibrate loose and exces­sive torque can strip threaded fasteners. Using a quality torque tool has
become increasingly important for many companies to ensure that proper
torque is being applied and maintains gauge requirements associated with
the ISO 9001 Quality Standard. Look for the Mountz hexagon logo - it's a
stamp for quality tools, service and knowledge in the field of torque con­trol.

Mountz Service Locations

Eastern Service Center

19051 Underwood Rd.
Foley, AL 36535
Phone: [phone]
Fax: [phone]

Western Service Center

1080 N.11th Street
San Jose, CA 95112
Phone: [phone]
Fax: [phone]

Mexico Service Center

Mountz Mexico SA de CV Chihuahua
Av. Cristobal Colon #15343
Col. Paseos de Chihuahua
Chihuahua, Chih. Mexico CP 31125
Phone: [phone]
Fax: [phone]

www.mountztorque.com

[e-mail]

Download a “Service Form” and include a copy

when you send the tools in to be serviced.

Looking for fasteners?

www.mrmetric.com