CHAPTER 2: INSTALLATION AND SETUP
UNIFLOW
®
4 PULSED HEAT CONTROL
2-8 990-908
Control to Head Connections
To connect the Control to the reflow soldering or heat seal head, refer to the head manufacturer’s
manual as you follow the instructions below.
1. Connect the reflow soldering or heat seal head thermocouple cable, referenced in this manual
as
MAIN thermocouple, to terminal block J9 on the rear panel. Connect a second thermocouple,
referenced in this manual as
AUXILIARY thermocouple, to terminal block J15 on the rear panel.
2. To reduce noise pickup, make sure the thermocouple cables do not run next to the
transformer cables that connect the head to the transformer terminals on the remote
transformer. If you are using two individual thermocouple wires, they must be twisted
together in order to reduce noise pickup.
NOTES:
The connector is keyed so that it cannot be installed improperly.
The Control requires that the thermocouple polarity be correct. If the thermocouple
polarity is reversed, the control may display the error message “OVER POWER
ALARM – Check TC (thermocouple), Cycle Power.” See Appendix B, Main
Thermocouple Input Connector (J9) for the correct connection.
The Control will not respond to an initiation signal until the thermocouple is properly
connected. The LCD will display an error message if the thermocouple is not
connected.
3. Plug the green CONTROL INPUT JUMPER plug (marked P4B) into connector J4B on the rear
panel.
4. Connect the data interface connectors on the rear panel to the PLC using the Phoenix-type
connector, J6A/J6B.
5. If you are working in a CE standards environment using an Emergency Stop Switch, it must be
connected across pins 1 and 2 of the EMO SWITCH connector. If you are not using an
Emergency Stop Switch, you must install the EMO jumper plug supplied in the Ship Kit on the
EMO SWITCH connector. This plug shorts Pins 1 and 2, labeled EMO SWITCH on the rear panel.
See Appendix B, Electrical and Data Connections for details.
NOTE: If the EMO jumper plug, or an Emergency Stop Switch, is
not connected to pins 1 and
2, an Emergency Stop Alarm will be activated.
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