APPENDIX A: TECHNICAL SPECIFICATIONS
UNIFLOW
®
4 PULSED HEAT CONTROL
A-6 990-908
Solid State Relays:
Air Head Valve ................................................................................... ON/OFF for head actuation
Head Cool Valve ................................................................ ON/OFF for cooling thermode holder
Solder Cool Valve .............................................. ON at COOL period, OFF at PREHEAT period
STANDARD Version
Power (Uniflow4 control provided) ...................................................... 24 VAC or +24 VDC
Contact Rating ................................................................................... 24 VAC/24 VDC, 0.3 A
REMOTE Version
Power (Uniflow4 control provided) ......................................................................... +24 VDC
Contact Rating ................................................................................................. 24 VDC, 0.3 A
Programmable Solid State Relays:
Relays Available ............................................................................................................................7
Power ........................................................................................................................ User provided
Contact Rating ................................................................. 0.5 A at 30 VAC or 30 VDC maximum
Programmable Electromechanical Relays Functions:
System Ready ................................ On/Off when Uniflow4 Control is ready for reflow operation
Heat On ............ On/Off during baseheat, rise1, preheat,rise2, reflow and postheat process cycle
Head Is Up ...................................................................................... On/Off when head is retracted
Alarm ............................................................................................ On/Off for any alarm condition
Out of Limit ......................................................................... On/Off for any out of limit condition
Clean Thermode ..................................................... On/Off when clean thermode counter expires
Replace Thermode ............................................... On/Off when replace thermode counter expires
Idle ................................................................................................. On/Off if idle temperature On
Baseheat ............................................................................. On/Off during baseheat process cycle
Rise1 ............................... On/Off when 50% of the programmed Rise1 time has elapsed. At the
end of the programmed Rise1 time, the relay will switch back to Off/On
Preheat On ............................................................................ On/Off during preheat process cycle
Rise2 ............................... On/Off when 50% of the programmed Rise2 time has elapsed. At the
end of the programmed Rise2 time, the relay will switch back to Off/On
Reflow .............. On/Off from start of heating to COOL1 if no Postheat cycle otherwise COOL2
Cool1 ................................................................ On/Off when the COOL1 temperature is reached
End of Reflow ............. On/Off when COOL1 is reached if no Postheat cycle, otherwise COOL2
Cycle Pwr Alarm .................................................................. On/Off for “cycle power” conditions
NOTE: If an Alarm is triggered and then the alarm condition is removed, the alarm relay state will
continue to remain active until one of the following actions occurs:
a) The User applies a signal at J4A-7 on the Control back panel to reset the ALARM relay
state.
b) The User presses the Up Arrow Key on the front panel.
c) The User initiates another reflow process and the reflow process completes without an
alarm and returns to the System Ready condition.
NOTE: Refer to Chapter 5, Maintenance to reset alarm relay states.
Output Timing ...................................................................................See Appendix C, System Timing
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