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Appendix 1 - TR2512 Typical Standalone Backplane Connections
The following diagram is representative of a typical standalone backplane. If in
any doubt about the connections, the backplane and/or controller manufacturer’s
handbook should be consulted.
The RTM500 uses opto-isolated open collector transistor outputs, NOT relays.
IMPORTANT NOTES
For
Issue 3
and below hardware versions of the RTM500 Interface Card:-
There is NO change-over signal between the open to detect and close to detect
backplane outputs. The SAME output is provided on both the open and close to
detect, i.e. these are joined at the interface card.
Jumper position 1 (top two horizontal pins) on the card can then be used to invert the
output signal to get either open to detect OR close to detect (but not both) at the
backplane.
If the RTM500 is to be powered by a 24v AC power supply, the AC connections must
be made to pins 19 & 20 (the same as 24v DC supply). If left at pins 23 & 24, the
card will not power up.
For
Issue 4
and above hardware versions of the RTM500 Interface Cards:-
Both open and close to detect outputs are provided for each channel through the
detector backplane connections as shown in the above diagram.
Separate connections are also provided for 24v AC and DC supplies and connection
must be made as shown in the above diagram.
