Miller Dynasty 400 Owner's Manual page 35

18 Output
19 Input
23 Output
24 Output
All other pins not used.
B. Welder Controlled Automation Mode (Pin 20 Connected To Pin 8) Automation 1
Use this mode when only the basic functions of the automation board are required, or if the welder needs to control the initial and final weld
timers. These functions include Start/Stop, Valid Arc Indication, Gas Control, High Frequency Arc Start Disable, Remote Memory Select, and
Emergency weld stop. The welding power source functions as a standard unit. Automation 2 mode should be used when an externally controlled
pulse waveform is needed, or if the welder's amperage is affected by noise injected into the cabling between the remote equipment and the
welder.
A. User Controlled Automation Mode (Pin 25 Connected To Pin 8) Automation 2
8
14 13
19
20
25
28
Signal
2-5. Remote Memory Select Inputs (For 28-Pin Receptacle If Present)
Pin
Direction
1 Input
3
8
14
2 Input
20
25
28
3 Input
4 Output
5 Output
6 Output
7 Output
8 Output
9 Output
10 Input
�
Complete Parts List is available at www.MillerWelds.com
+10 volts DC
High Frequency Arc Start
Disable
Final Slope Sequence
Indication
Final Slope Sequence Indi-
cation Reference
A complete Parts List is available at www.MillerWelds.com
2
3 1
7 6 5
4
9
12 11
10
15
18 17 16
24 23
22 21
27
26
Description
Start/Stop
1
4
9
Emergency Weld Stop
15
21
Gas Control 26
Valid Arc Indication
Scaled Actual Welding
Voltage
Scaled Actual Welding
Amperage
+15 Volts DC
Reference Pin
Valid Arc Indication
Reference
Memory Select
With respect to pin 11 for use with an external potentiometer to vary the signal
into pin 17 (Pin C of 14 pin).
Disables the arc starter from being activated when connected to pin 8.
Paired with Pin 24. Pin is closed to pin 24 when in Final Slope. Electrical
specifications: Open collector transistor maximum values 27 volts DC peak @
75mA. See Section 5-5 .
Paired with pin 23. Connect to user's external voltage supply common. See
Section 5-5 .
Pin Information For 28–Pin Receptacle RC28
Maintained connection to pin 8 starts the weld cycle. Opening connection
stops weld cycle. For momentary closure operation, set unit to 2T. A momen-
tary closure greater than 100 ms, but less than 3/4 of a second starts and
stops weld output.
Used to remotely stop the weld outside the normal welding cycle (i.e. light cur-
tains or external E-Stop). Connection to pin 8 must be maintained at all times.
If the connection is broken, output stops, Postflow begins, and will be dis-
played on the meters.
This input is used to control the gas flow outside the settings of the preflow
and/or postflow set on the machine. Connection to pin 8 turns on gas.
Paired with Pin 9. This output is used to signal external fixtures that the ma-
chine has detected a valid arc. Pin is closed to pin 9 when the output is on
and there is less than 65 load volts. Electrical specifications: Open collector
transistor maximum values 27 volts DC peak @ 75mA. See Section 5-5 .
+1 volt DC per 10 volts of output w/reference to pin 11.
+1 volt DC per 100 amperes of output w/reference to pin 11.
With respect to pin 11 (Pin A of 14 pin).
This pin is the signal reference for pins 1, 2, 3, 10, 15, 16.
Paired with Pin 4. Connect to user's external voltage supply common. See
Section 5-5.
Used to select between memory numbers. Used in conjunction with pins 15
and 16. See Section 5-7.
804746-B / 21816-A
OM-275857 Page 25