APPENDIX B: ELECTRICAL AND DATA CONNECTIONS
UNIFLOW
®
4 PULSED HEAT CONTROL
990-908 B-17
Automation Control Inputs Connections
Input Signal: 0 or 24 VDC
Remote Profile Inputs: All Profiles must be entered and saved in the Control memory locally
(from the Front Panel). Once they are saved, they can be recalled prior
to initiating the Reflow process by placing a binary value on the four
SCHED lines. This may be done with an external PLC (Programmed
Logic Controller) or host computer. When all of the SCHED Inputs are
inactive (0000), the Profile Number (1-63) can be selected from the Front
Panel. When any of the SCHED Inputs are active the Profile Number
Keys on the Front Panel become disabled and the Profile Number is
selected through the Profile Remote Inputs, SCHED 0, SCHED 1,
SCHED 2, SCHED 3, SCHED 4, and SCHED 5. The Profile Number Zero
(0) is not a displayable selection.
REMOTE PROFILE INPUTS
Profile
Number
SCHED 0
Pin J4B-7
SCHED 1
Pin J4B-8
SCHED 2
Pin J4B-9
SCHED 3
Pin J4B-10
SCHED 4
Pin J4A-9
SCHED 5
Pin J4A-10
0 0 0 0 0 0 0
1 1 0 0 0 0 0
2 0 1 0 0 0 0
3 1 1 0 0 0 0
4 0 0 1 0 0 0
5-62 Binary progression from 5 to 62
63 1 1 1 1 1 1
NOTE: You may use mechanical switches, opto couplers, or a PLC for remote profile selection.
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