Data Flow Systems TCU800, Installation And Operation Manual

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17
U n i t O v e r v i e w
The TCU reads and displays True RMS voltages much the same as modern voltmeters. Readings from older
voltmeters that display RMS, but not True RMS, might differ from the TCU’s readings.
Outputs
Solid-State Control
The TCU features four solid-state (120-240VAC only) digital outputs. Three of these are used for Motor Start (P1-21
through 24) with the other used by the Aux Output (P1-19). The output for the Motor Starts are gated/switched through
the TCU’s H-O-A switches. In Auto the solid-state switches are used by the TCU to control the pumps, In Off no power is
permitted to the Motor Start outputs, and the solid-state relays are manually bypassed and Motor Start pins are electrically
energized by placing an H-O-A switch in the Hand position.
Mechanical Relay Outputs
The TCU’s two mechanical relay output are for the Alarm signals, both horn and light. They can be VAC or VDC with
recommended wiring instructions and relays rating listed elsewhere in this manual. Ifnot used for Alarms, either can be
configured for manual control, via telemetry.
USB Ports and Configuration
The TCU’s face plate features two USB type-A ports that can be used for diagnostics, configuration storage, and updating.
A USB flash drive correctly formatted and loaded with appropriate files will allow easy transfer of pump configuration
parameters from one TCU to another.
The TAC Pack TCU Configuration Connector or address card is not used in the TCU800. Instead, the USB
configuration stick will replace this method of setting the TCU’s station address.
Service Port
The USB ports can be used to serially connect to the TCU’s core through a USB-to-Ethernet adapter. This will allow the
user to
SSH into the unit at the IP address registered to the adapter and access the logs on the unit. If the TCU is already
connected to the internet (via the Ethernet) then the USB-to-Ethernet adapter is not necessary.
Touch screen
A 5” capacitive touch screen provides an interface for configuring the TCU, viewing and resetting alarms, and analyzing
status information.
TCU800 Service Adapter