Titan Logix Rack Control Module User Manual

TD80™ Level Gauging and Overfill Prevention System Product Manual
Rev. 2, August 4, 2015/ TD80 Introduction Page 11
TPM 001
Devices such as horns and lights are connected to these alarm relays for
operator action. The Fall, High-High and Spill/Fail relays typically operate
shutdown controls including external relays, and solenoid operated valves.
1.4 Overfill Prevention System Description
The description below incorporates the recommended Finch Relay Module.
See the Overfill Prevention System Installation Section 2.7 for detail.
1. Power On
The TD80 and Finch proceed through the normal start-up sequence as
described below. Once completed; “OFF” will be displayed on the Finch.
Level is displayed for 30 seconds by a momentary press of the Up or Down
buttons.
2. PTO Engaged
The operator engages the truck mounted PTO to begin loading. The PTO
signal to the Finch is controlled by an air/electric switch that causes the
following to occur:
1. Finch Display to an active mode with all alarms enabled and continuous
level display.
2. A Solenoid is energized to allow loading by controlling a Normally
Closed bottom loading valve or a Normally Open hydraulic motor
bypass valve.
3. The Green Light is on to indicate loading is permitted.
4. The Red Light and Horn are off at the start of the loading process.
Bottom Loading Valves:
The unpowered condition of a bottom loading valve is normally closed. The
solenoid must be powered to allow loading. Any alarm condition for system
errors, failures or overfill will cause the solenoid to be de-energized and halt
the loading process. A disengaged PTO will also close the valve.
Hydraulic Bypass Valves.
The unpowered condition for a hydraulic motor bypass valve is normally
open. The solenoid must be powered to allow loading by closing the bypass
circuit. Any alarm condition for system errors, failures or overfill will cause the
solenoid to de-energize and halt the loading process. A disengaged PTO will
also open the valve.
3. Operator fills the tank
The liquid is loaded into the tank using either the on-board or a stationary
pump. When the liquid reaches the Fill alarm level, the following occurs:
a. The Red light and Horn turn on to alert the operator that he is getting
close to the loading limit and has to prepare to turn off the pump and
close the valve.
b. The Green Light stays on to indicate continued loading is permitted.

Titan Logix Rack Control Module Specifications

General

Brand	Titan Logix
Model	Rack Control Module
Category	Measuring Instruments
Language	English