Mountz STC30 Plus User Manual

Power

The STC30 Plus (v1.3) turns on once the power cord is securely placed into the back of the unit and is plugged into the power source.
Green power light comes on.

Connecting Electric Screwdriver

Before connecting the electric screwdriver, make sure the little switch in the lower bottom right of the STC 30 Plus (v1.3) is
positioned in the proper setting (EF or K). See diagram below. Only operate tool in proper setting.
1. Attach cord of the electric screwdriver to transformer. Make sure notch in plug lines up with the notch on the socket. Tighten knurled
ground ring.
2. Select HIGH & LOW speed button. Select the appropriate speed for your application.
EF Mode
Low = Output is 20VDC
High = Output is 30VDC
3. Turn driver on and check for proper rotation. FOR-clockwise, REV-counterclockwise.
4. To apply torque, squeeze the lever (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 (0.5, 1.0 1.5 & 2.0 seconds). When you select this mode it starts
at 0.5 seconds.
- Press the "sT" button again and the Yellow light will blink twice and the Soft Start time will increase to 1.0 seconds.
- Press the "sT" button again and the Yellow light will blink three times and the Soft Start time will increase to 1.5 seconds.
- Press the "sT" button again and the Yellow light will blink four times and the
Soft Start time will increase to 2 seconds.

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 electric
screwdrivers rundown a fastener quickly and the tool clutches off once
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 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.

Output Pin Connection

1
5
1: Motor (+)
2: Limit
3: Motor (-)
4: Drive
4
2
5: Ground
3
Corporate Headquarters: 1080 North 11th Street, San Jose, CA 95112
STC30 Plus (v1.3) Transformer
K Mode
Low = Output is 30VDC
High = Output is 38VDC
www.etorque.com
Rev 1.2
20/30V
Select EF mode for operat-
ing the following drivers:
A4500-6500HT
SS3000-7000
CL2000-9000
EF150
Make sure the switch is correct position before operating
your tool. Either EF or K mode.
Phone: (408) 292-2214 Fax: (408) 292-2733
EF K
30/38V
STC30
Plus
Select K *mode for operating
only the following
drivers:
K250-450
* Do not operate any tool in this
mode except for the K-Series
drivers.
sT
Soft Start &
Double Hit
function
STC30
Plus
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