4 Power Supply
4.1 Overview and Requirements
The SCADAPack controller is primarily a DC input powered device but can be powered with 16Vac
under some conditions. The power supply requirements and setup is explained in the proceeding
sections.
Note: Voltage referred to as Vrms (or VAC on some products) indicates AC power. Voltage
referred to as V indicates DC power.
The 5232 Controller board can be powered from a 12Vdc to 24Vdc power source applied to the DC
PWR input or a 16Vac power source applied to the AC PWR IN input. With input power applied the
5232 Controller board power supply provides an internal 5V output to power the integrated I/O
module and 5000 Series modules through the inter module cable (IMC).
The 5V supply has a 1.3A output capacity of which 500mA is required by the 5232 Controller board.
The remaining capacity, 800mA, is used to power the integrated I/O module and other 5000 Series
modules connected through the IMC cable.
When the 5232 Controller board is powered with 16Vac power applied to the AC PWR IN input a
limited amount of 24Vdc power is provided on the DC PWR terminals. The amount of 24Vdc power
available is dependent on the amount of 5V output power used in the system. With the controller
board consuming 500mA of current at 5Vdc, 360mA at 5Vdc is available to power external devices.
However, this value linearly decreases to 80mA when the onboard power capacity is exhausted.
Refer to the user manual of your respective I/O module for a sample power supply calculation.
4.2 Power Supply Input Connections
Input power is connected to the SCADAPack 32 controller board in one of the following ways:
• A 16Vac source connects to the AC/DC PWR IN terminals on the Controller board and on the
5601 I/O Module. See section 4.2.1- Recommended AC Power Supply Configuration for an
example of using a 16Vac transformer to power the SCADAPack 32 controller.
• An 11-24Vdc source connects to the DC PWR terminals on the Controller board and on the
integrated I/O Module. See section 4.2.2-Recommended DC Power Supply Configuration for an
example of using a DC power source coming from an 11-24Vdc power source.
• An 11 to 24Vdc high current capacity source, such as batteries, connects to the AC PWR IN and
DC PWR IN terminals on the 5232 Controller Board. See the section 4.2.3- Recommended
Battery Supply Configuration for a wiring example.
• A 5103 UPS Power Supply supplies 5Vdc to the controller board through the IMC cable and
supplies 24Vdc to the integrated I/O module through the 24Vdc output. See section 4.2.4-
Recommended 5103 Power Supply Configuration for an illustration.
CAUTION: Power can be applied to either the AC/DC power input OR the DC power input. DO
NOT apply power to both inputs. Damage to the power supply may result.
4.2.1 Recommended AC Power Supply Configuration
This configuration uses a single Class 2 transformer to power the controller board and any integrated
I/O modules. 24V are available on the controller module connector P3 which can be used to power
the analog circuitry for the analog input and output circuits on the integrated I/O module.
SCADAPack 32 Controller Hardware Manual
May 24, 2006
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