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
Soft Start 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, CA 95112 Phone: (408) 292-2214 Fax: (408) 292-2733
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
