Summary Of Possible Connections - Centsys Lattice Installation Manual

NOTE: The 3 digit LED display of the L1000 is mounted on the reverse side of the PCB
As will be seen the terminals on the two different PCB's are virtually identical. The L1000 has an additional
two terminals (PC Rx and PC TX used to connect the L1000 to a Take Up Head) not found on the LSH. The
following table is a summary of all possible connections:

Summary of Possible Connections

Terminal
Reference Description
15 VDC
Supply to the device can be AC, or DC, but must not exceed 15VDC or 12V AC
12 VAC
FRX-FIRE
Free-exit (or Fire) normally-open, voltage free contact. Common connected to (CHD-)
DOOR SEN Voltage free contact; closed when door is closed. Common connected to (CHD-)
ALARM External Alarm output (open collector).Positive connected to (CHD+).Maximum current 50mA
CHD+ Smart Switch II positive (+12V DC)
CHD- Smart Switch II negative (system common terminal)
CHD Smart Switch II drive (open collector)
*PC RX
Communication to take up head (Receive)(P2)
*PC TX
Communication to take up head (Transmit)(P1)
RS485C
RS485 common
RS485B
RS485 signal line B (twisted pair, CAT 5)
RS485A
RS485 signal line A (twisted pair, CAT 5)
N/C
Output relay (normally-closed, voltage free)
COM
Output relay (common, voltage free)
N/O
Output relay (normally-open, voltage free)
Table 1 showing Description of Terminal References
* - These terminals only on L1000, not LSH
Identification of the Take Up Head (TUH)
Network Proximity
Access Control
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