MedWeld 4000 Overview
1 - 16
Modified: 12/16/08
MedWeld 4000 Operator’s Guide
M-032116 Programs #T03300, #T02300 and #T02400
Discrete I/O Board
The Discrete I/O board (WTC p/n 900-8213-2) serves to add more I/O
capability to the welding control. The board’s main features are:
•
16 inputs (grouped in 2 banks of 8 inputs per bank. Each bank can
operate at a different voltage). These inputs can operate with any
voltage between 16 V and 120 VAC or VDC.
•
10 outputs (grouped in 2 banks of 5 outputs per bank. Each bank
can operate at a different voltage.) The outputs are
electromechanical relays rated to switch up to 5 A. at 240 VAC.
This board operates at either 50 or 60 Hz line frequency.
Figure 7 below shows the connectors and LEDs on the board:
Figure 7:
Discrete I/O Board
Connectors and LEDs
I/O from Board
(p/n 900-822x-x)
Program port
MedLAN
port
WTC Firing Card
Interface port
10 Outputs
(dry contacts,
8 Inputs
(110 VAC/
8 Inputs
(110 VAC/
24 VAC / VDC)
Connector to Timer Assembly Board
24 VAC / VDC
2 banks of 5 outputs per bank)
J3
J4
J5
(
J3
,
J4
: 2 banks
Power
LED
900-8213-2
Output LEDs
1, 3, 5, 7
Output LEDs
2, 4, 6, 8,
#1
#3
#5
#7
#2
#4
#6
#8
#9
#10
9, 10
Input LEDs
#1 - 16. (Red =
input is ON.)
of 8 inputs each)
Input Voltage Level LEDs
(Green = 24 VDC;
OFF = 120 VAC)
Left to right:
2 banks of
8 inputs
per bank.
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16
J2
