Customer Interface

Customer connections are for remote equipment and are used to interface the grain dryer with fill and takeaway equipment. The grain dryer does not supply power for these interfaces. An auxiliary power source should be used to power customer equipment.

Fill Customer Connections

• F1-F2 = Fill equipment status

• F3-F4 = Fill 2 dry contacts

• F5-F6 = Fill 1 dry contacts

F1-F2

F1 and F2 is a signal to the PLC confirming that customer fill equipment is not in a fault condition and can be started.

F3-F4

F3 and F4 are a dry set of normally open contacts that close when the dryer fill cycle begins. When this closes (when the call for grain happens), the dryer will start all the customer’s equipment that is associated with Fill 2. It is the last of the fill equipment to stop.

F5-F6

F5 and F6 are a dry set of normally open contacts that close when the dryer fill cycle begins. When this closes (after the delay following the call for grain expires), the dryer will start all the customer’s equipment that is associated with Fill 1. Fill 1 equipment will stop after the call for grain but before fill 2 equipment stops.

Takeaway Customer Connections

• T1-T2 = Takeaway equipment status

• T3-T4 = Takeaway 2 dry contacts

• T5-T6 = Takeaway 1 dry contacts

T1-T2

T1 and T2 is a signal to the PLC confirming that customer takeaway equipment is not in a fault condition and can be started.

T3-T4

T3 and T4 are a dry set of normally open contacts that close when the dryer Takeaway START button is pressed. This starts all customer’s equipment associated with Takeaway 2 immediately after the button is pressed. Equipment tied to this signal will stop after the Takeaway STOP button is pressed and the Takeaway 2 Stop Delay has elapsed.

T5-T6

T5 and T6 are a dry set of normally open contacts that close when the dryer Takeaway START button is pressed and the Takeaway 1 Start Delay has elapsed. This starts all customer’s equipment associated with Takeaway 1. Equipment tied to this signal will stop immediately after the Takeaway STOP button is pressed.

E-Stop Customer Connections

• E1-E2 = Customer E-Stop status

• E3-E4 = Safety Relay Circuit 1

• E5-E6 = Safety Relay Circuit 2

E1-E2

E1 and E2 is a signal to the PLC confirming that all customer equipment included in the safety circuit are satisfied

E3-E4

E3 and E4 breaks the 24V signal and initiates an emergency shutdown of the dryer.

E5-E6

E5 and E6 breaks the 24V signal and initiates an emergency shutdown of the dryer.

Breaking either E3/E4 or E5/E6 will result in the same emergency shutdown of the dryer