Sonic Alert Digital Program Controller DCP301 - Manual (Page 45)

Chapter 4. WIRING
4-13
4-11 Connecting Time Event Output (open-collector)
Optional time event outputs T1 to T5 (open-collector outputs) can be added on. Time event outputs are connected on
the add-on terminal base.
56
53
55
51
52
49
50
10 to 29Vdc
T1
T2
T3
T4
T5
Load
Load
Load
Load
Load
External power supply
Add-on terminal base
Bias circuit
Maximum load current:
OFF leakage current: 70mA/load
0.1mA max.
• Be sure to connect terminal (55) to the + terminal of the external power supply.
Otherwise, open-collector output will not function.
• Do not short-circuit the + terminal of the external power supply and terminals
(49) to (53) on the DCP301. Doing so will cause faulty open-collector output.
(The DCP301 does not contain a short-circuit prevention circuit.)
• When connecting to a semiconductor load such as a programmable controller
(sequencer), select a module whose current directions are matching.
Use a module that does not operate by leakage current when the open-collec-
tor output of the DCP301 is OFF.
Handling Precautions