ABB TCC300, Руководство пользователя, Страница: 454 / 716

Aux Relay 1
120 Vac
TCC300 VR1
Input
TCC300
Aux Relays
120 Vac
TCC300 VR2
Input
Aux Relay 2
120 Vac
TCC300
Neutral Input
Aux Relay 3
120 Vac
TCC300
Counter Input
12 Vdc
wetting output
Aux Relay 4
Aux Raise contact N.O.
(Changes state for each Raise operation)
Aux Lower contact N.O.
(Changes state for each Raise operation)
1R contact N.O.
(Closes when on Tap 1R)
1L contact N.O.
(Closes when on Tap 1L)
GUID-A2C94934-6EC0-4BA4-A071-8EAE55F907D3 V1 EN
Figure 355: Cam Switches Available With Wetted 120 Vac
Example of Contact KeepTrack Method I – Using 1R/1L Contact Input
In this example, an out
‑
of
‑
band condition occurs which causes the raise output from the
TCC300 to turn on. This will cause current to flow to the motor causing it to start a raise
operation. The Aux Raise contact will close which will send directional feedback to the
VR1 Input of the TCC300. This will tell the control to increment the Contact KeepTrack
tap position by 1 tap.
Once the raise operation is completed, the Aux Raise contact will open removing the input
to VR1. When the unit no longer requires a raise output the raise output from the control
will be turned off. If a lower operation is required then the same steps will occur except
that Aux Lower contact will close and VR2 will be used.
Activation of the 1R contact in conjunction with the Aux Raise contact closing, then
opening will cause the Contact KeepTrack tap position to be set to 1R. If the next operation
results in the 1R contact opening in conjunction with the Aux Lower contact closing then
opening, then Contact KeepTrack will increment to Neutral. Once in Neutral, the control
will continue to display Neutral until either the 1R or 1L contact operates in conjunction
Section 6
1VAC388793-MB A
Configuration
448 TCC300
User Manual