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Power Supply Regulators
Power Supply Regulators are used for direct power inputs of 24 or 48VDC. In systems with
120/240VAC and 125VDC Power Input, an external power supply is required to provide a 24 VDC
output to the Power Supply Regulator. The Power Supply Regulators may be used to provide an
internal Field Contact Voltage of 24 or 48 VDC or accept an external isolated customer supplied field
contact voltage of 24, 48 or 125 VDC. The field contact voltage is bussed to several terminals for
connection to the field inputs. The Power Supply Regulator also provides an internal horn relay which
is driven from a digital output (8 I/O or 16 O Module) assigned as a horn output. In systems with
external Annunciator Displays, the Power Supply Regulator provides a 24V Supply for the
Annunciator Lamps (LED's). The Power Supply Regulators may have a suffix of A depending on the
version. Ex. REG-90A
The different types of Power Supply Regulators are shown below:
REGULATOR Type REG-90 and REG-91
This unit is used in 3U logic boxes where the system supply is 24V DC.
It provides the 5V supply necessary for the 10 usable slots plus the CPU, which equates to 128
inputs and 160 outputs maximum.
An auxiliary horn relay is mounted within.
REG-90 (STANDARD) Intended for use where the initiating contacts are being powered from
the 24 V supply voltage.
REG-91 (ISOLATED) Intended for use where the initiating contacts are being powered from a
supply other than the system supply. This isolated supply would be connected to "+VIN" and
"OV IN" terminals.
All connections to the above units are by screw type terminals.
REGULATOR Type REG-92 and REG-93
This unit is used in 6U logic boxes where the system supply is 24V DC.
It provides the 5V supply necessary for the 23 usable slots plus the CPU which equates to 128
inputs and 240 outputs including auxiliary cards to box capacity. Otherwise they are generally
as per REG-90/91.
REG-92 - (STANDARD)
REG-93 - (ISOLATED)
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