11
IQ Power™ HL
5201201 Rev. D
line cord also provides electrical ground to the AC adapter. Check electrical ground
integrity in the line voltage receptacle used for the AC adapter. This ground must not
be defeated.
G.
Connect user supplied power
(if used). In cases where the user does not want to
use the AC adapter but wants to supply 24V
DC power to the IQ Power™ HL
Power Supply, user supplied 24V
DC power may be applied two ways.
The “Power In” connector on the end panel of the IQ Power™ HL Power Supply
may be used to supply power to the system. This connector requires the use of a
Switchcraft 760K barrel type power plug. The plug should be wired +24V
DC
to center and common (ground) to outer barrel. The common must be bonded to
electrical ground. Wired in this fashion, the “Power” switch on the end panel of the
power supply is in circuit.
Alternatively, the “Alarm Output” connector on the end panel of the IQ Power™ HL
Power Supply may be used to supply power to the system. This connector requires
the use of a standard DB25 connector. The connector should be wired:
• +24V
DC to pins 13 & 25
• Common (ground) to pins 12 & 24
To ensure current carrying capacity, two pins are used for each connection. The
common must be bonded to ground. Wired in this fashion, the “Power” switch on the
end panel of the power supply is bypassed. (refer to Figure 3)
Power supplied in the above fashion must have adequate current available to power
all components on the system (maximum 4A). Input power should be appropriately
fused for safety purposes.
