System Power-Up - Keyscan CA250 Series Technical Manual

System Power-up

The following is a guideline on initially powering up the control board.
 connect 12 VDC power to the control board as shown in Figure 85 – DPS-15 Power Supply
 connect fully-charged backup battery
 connect 2 x 16V 40VA or 16.5V 37VA class 2 transformers - ensure that both CSA/UL approved
transformers and fully-charged backup battery are connected for proper system operation - do not mount
the transformers or bring 120/240 VAC inside the ACU metal enclosure
 repeat battery and transformer connections for additional power supplies
 check ACU voltage test points after power is applied to the ACU - refer to Table 25 and Table 26.
 if software selection S2 switches 9 and 10 were altered, load factory default settings by pressing S1, wait
5 seconds, and then press S3 within 10 seconds.
 from a server/workstation with a Keyscan Client module upload the Keyscan database to the ACUs after all
correct voltage and current measurements are verified
Notes
For battery circuit and auxiliary power output to function, connect two (2) CAS/UL approved transformers
as shown in the following DPS-15 connection diagram.
Keyscan Inc. – Technical Guide (PC109x - 07.15) 123