OPERATION MANUAL TMS4000
TMS4000 Operation Manual 2018-08-03.docx August 3, 2018
PAGE 59
Front Panel Ack: Acknowledges a relay by returning it to the defined normal state after pressing any
key on the front panel of the TMS
Normal State: A relay is de-energized by default when there is no condition present to activate it. This
can be reversed by defining the normal state of the relay as on (energized). A de-energized relay, in
that case, would represent the alarm or action state.
Delayed Shutoff: Returns the relay to normal after a delay set in minutes. Selecting None disables
this feature.
Latch Enable: Enables a latching feature which separates the conditions that activate a relay from
the condition that returns the relay to normal. Ideal for pump/valve control applications. By enabling
this feature for a particular relay, all conditions previously assigned to that relay will be the Latch On
condition for the relay. Separate conditions would be defined as the latch off conditions as follows:
• Product Set Points: Select the hardware channel of the tank next to the desired Set Point to
select the Latch Off condition for the selected relay.
• Sensor Off: Located immediately below the Product Set Points. Select the Sensor number to
be used as the Latch Off condition for the selected relay.
• Water Set Points: Select the hardware channel of the tank next to the desired Set Point to
select the Latch Off condition for the selected relay.
• Temperature Set Points: Select the hardware channel of the tank next to the desired Set
Point to select the Latch Off condition for the selected relay.
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