OM-275857 Page 27
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Complete Parts List is available at www.MillerWelds.com
3
Input
Gas Control
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.
4
Output
Valid Arc Indication
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 .
5
Output
Scaled Actual Welding
Voltage
+1 volt DC per 10 volts of output w/respect to pin 11.
6
Output
Scaled Actual Welding
Amperage
+1 volt DC per 100 amperes of output w/respect to pin 11.
7
Output
+15 volts DC
With respect to pin 11 (Pin A of 14 pin).
8
Output
Reference Pin
This pin is the signal reference for pins 1, 2, 3, 10, 15, 16.
9
Output
Valid Arc Indication
Reference
Paired with Pin 4. Connect to user’s external voltage supply common. See
Section 5-5 .
11
Output
Control Reference
For pins 5 and 6.
12
Output
Welders Chassis
Earth ground. Connected only if common potentials are needed between user
equipment and the welder.
19
Input
High Frequency Arc Start
Disable
Disables the arc starter from being activated when connected to pin 8.
21
Input
Isolated EN Amperage
Common
Paired with Pin 22.
22
Input
Isolated EN Amperage
Command
Paired with pin 21. Sets output amperage value for a Maxstar and the EN am-
perage value for a Dynasty. Value should be between 0.3 to 10V correspond-
ing to the minimum to maximum of the machine.
25
Input
User Controlled Automa-
tion Select
Connect to pin 8 to activate this mode.
26
Input
Isolated EP Amperage
Command
(Dynasty models only) Paired with Pin 27. Sets EP (cleaning) output amper-
age value. Value should be between 0.3 to 10 volts corresponding to the mini-
mum to maximum of the machine.
27
Input
Isolated EP Amperage
Common
(Dynasty models only) Paired with Pin 26.
28
Input
AC Waveform Generation
(Dynasty models only) User controlled polarity (EN or EP), frequency (20-400
HZ) and balance of an AC waveform. When this pin is not connected to pin 8
the weld output is EN. When this pin is connected to pin 8 the weld output is
EP. Alternating between connection and disconnection at different intervals
creates the frequency and balance of the waveform.
All other pins not used.
5-7.
Remote Memory Select Inputs For 28-Pin Receptacle (If Present)
28-Pin Receptacle RC28
Function
Pin 10
Pin 16
Pin 15
A complete Parts List is available at www.MillerWelds.com
A. User Controlled Automation Mode (Pin 25 Connected To Pin 8) Automation 2
804746-B / 21816-A
1
4
9
15
21
26
28
25
20
14
8
3
2
7
6
5
13
12
11
10
19
18
17
16
24 23
22
27
2-5.
Remote Memory Select Inputs (For 28-Pin Receptacle If Present)
1
4
9
15
21
26
28
25
20
14
8
3
Off
0
0
0
Memory 1
0
0
1
Memory 2
0
1
0
Memory 3
0
1
1
Memory 4
1
0
0
Memory 5
1
0
1
Memory 6
1
1
0
Memory 7
1
1
1
Socket Designations: 0 = No Connection / 1 = Connected To Ground (Pin 8)
Summary of Contents for Dynasty 400
Page 78: ...OM 275857 Page 68 275852 H Figure 12 2 Dynasty 400 Circuit Diagram Page 2 of 2...
Page 80: ...OM 275857 Page 70 Figure 12 4 Maxstar 400 Circuit Diagram Page 2 of 2...
Page 81: ...OM 275857 Page 71 275854 G Figure 12 5 Dynasty 800 Circuit Diagram Page 1 of 2...
Page 82: ...OM 275857 Page 72 275854 G Figure 12 6 Dynasty 800 Circuit Diagram Page 2 of 2...
Page 83: ...OM 275857 Page 73 Figure 12 7 Maxstar 800 Circuit Diagram Page 1 of 2...
