View single post by EOTB

Posted: Monday Aug 25th, 2008 02:26 pm

EOTB

Joined:	Monday Jun 2nd, 2008
Location:	Fareham, United Kingdom
Posts:	20
Status:	Offline

Hi,

I have set up the main CPU panel on a test bench before installation. I have only connected:

Z1: Mag Switch
Z2: PIR
Z9: TWS Input
O/P9: TWS Output

I have written a simple response to turn the lights connected to the TWS on and off and assigned them to the Response On/Response Off of Zone1

Response 240:
78, 9, 13, 78, 9, 255

If Input Zone9 = 0 Then
Toggle Output OP9
End If

Response 241
78, 9, 12, 78, 9, 255

If Input Zone9 <> 0 Then
Toggle Output OP9
End If

I have found that in this configuration the Output fairly consistantly does not switch the relay on the TWS board correctly (the relay sounds as though it is switching and the lights flicker). On further investigation using a multimeter across the O/P9 terminals, I found that in the cases where it doesn't work correctly, it briefly sends 12v down the line and then returns to 0.

I have done the following to test the issue, but nothing worked:

Tested on different O/Ps on the LEM (specfically 10 and 16)
Swapped the LEM board and cable link (I have a second one on a Slave unit which hasn't been connected up yet)
Swapped the TWS module
Removed the cables from the O/P and just tested with a multimeter.
Removed the If statement around both responses so it just turns the relay on/off regardless of current state

The only way thing I have found that resolves the issue is if you configure the O/P to OP1 through OP8 on the main board. This works constantly without failure.

Just after writing the above, I have just reprogrammed the responses to toggle both OP1 and OP9. I have connected just LEDs into the connectors and tested. They both switch on and stay on together (with OP9 sometimes switch on slightly later which is probably the programming sequence).

If I connect the TWS module to OP9 with the LED, it seems to 'trip' the relay and the LED on OP9 flickers. The LED connected to OP1 stays on without any problems. If I connect the TWS to OP1, the TWS relay works fine and the LED on OP1 stays on, but the LED on OP9 flickers. I have tested this without the LED in OP1 also and the same thing occurs.

So basically, in short if I have the TWS module connected to either the main CPU or the LEM, the output on the LEM fails to switch regularly

Has anyone else seen this issue?

Thanks

Adam.

Last edited on Monday Aug 25th, 2008 02:26 pm by EOTB

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