TCS2-relay board TW00150

Each TCS2 holds 12 relay cards with six relays each. Each relay can control one tunnel device. 

Pictures

Connectors and indicators

The TCS2 Relay card has the following connections and indicators:

1.          Note: The Relay card connections are surfaced on the Motherboard, not the Relay card.

2.        Connectors.

a.        Interfaces to the Relay Source connections on the Motherboard.

b.       Interfaces to the Relay Output connections on the Motherboard.

c.        Relays A-D each has one normally open dry contact output.

d.       Relays E-F each has one normally open dry contact output, and one normally closed dry contact output.

3.        Indicators.

a.        ON LED. On when relay is on. Off when relay is off.

b.       FAULT LED. On when relay state does not match the state TunnelWatch tells it to be in.

i.           Example: Override switch is set to OFF, but the TunnelWatch software is telling the relay to turn on. In this case, the relay is being forced off, but TunnelWatch is telling the relay to turn on. The FAULT LED will be on.  

4.       Controls.

a.        Relay override switch.

i.           ON. Forces the relay to the ON state.

ii.         OFF. Forces the relay to the OFF state.

iii.       AUTO. Allows TunnelWatch to control the state of the relay.

Replacing

1.        Turn the TCS2 main power switch off.

2.        Pull the Relay card out of its socket on the Motherboard.

3.        Align the new Relay card with the card guides in the Relay card slot on the Motherboard.

4.       Push the Relay card firmly in the socket.

5.       Turn the TCS2 main power switch on.

 Troubleshooting

1.          Tunnel device is not turning on.

a.        Locate the relay that controls the device that's not turning on.

b.       Verify the override switch is set to AUTO. If the override switch is set to OFF, the software can't ever turn it on.

c.        Turn the tunnel device on using the relay override switch.

i.           Set the relay card override switch to the ON position to force the relay on.

ii.         If the tunnel device turns on, then the problem is with the software setup.

iii.       If the tunnel device does not turn on, check the relay card fuse for that relay. If the fuse is good, then the problem is with the tunnel device.

*Note there are several types of relay fuses depending on the manufacturing date of the board.  Replace with the appropriate type (known versions listed below).