Concept
PS-24V Power Supplies
PS-24V is the power supply for the AS-P servers and Central IO modules. The PS-24V power supply requires an input voltage of either 24 VAC +/–20 % or 24–30 VDC.
The PS-24V power supply is based on the patented two-piece design. Each PS-24V device consists of an electronics module and a terminal base.
PS-24V is usually installed on a DIN rail in a cabinet and provides power to the subsequent devices in the chain through the terminal base backplane. A PS-24V power supply consumes one address position, even though the address is not used.
A system may contain more than one PS-24V to supply the power needed, depending on the type and number of connected devices. A power budget table can be used for proper calculations. Pour plus d'informations, voir Power Budget .
The output voltage is 24 VDC supplied on the backplane, maximum 30 W. If the output is overloaded, the power is automatically shut down and the Status LED turns red. At an interval of a couple of seconds the power supply retries to switch on the power output. This is sometimes called ‘the hiccup mode’. Pour plus d'informations, voir Power Supply Overload .
The power supply has galvanic isolation between the primary (input power) and secondary (output power) side of the power supply.
Electronics Modules
The electronics module is the main component of SpaceLogic devices that are based on the patented two-piece design. The electronics module is installed on a terminal base, which constitutes the second component of the device.
Pour plus d'informations, voir Electronics Modules .
Terminal Bases
The terminal bases are used for SpaceLogic devices that are based on the patented two-piece design. The terminal base provides the I/O bus to the electronics module installed on the terminal base as well as to the SpaceLogic device installed to the right (next terminal base in the chain).
Pour plus d'informations, voir Terminal Bases .
Power Supply and Terminal Base Models
The PS-24V power supply consists of the following electronics module and terminal base models.
|
Model |
|
PS-24V a |
|
TB-PS-W1 a |
- The electronics module and terminal base models are available in variants named PS-24V-BAA and TB-PS-W1-BAA respectively. These variants are included in a Buy American Act (BAA) compliant bundle along with the AS-P-SBA server. For more information, see the SpaceLogic PS-24V Specification Sheet. PS-24V-BAA and TB-PS-W1-BAA do not differ from PS-24V and TB-PS-W1 in terms of hardware and functionality.
Power Supply PS-24V LEDs
There are two LEDs on the front panel of the PS-24V. The LEDs indicate status for input and output power.
Pour plus d'informations, voir Power Supply PS-24V LEDs .
Power Budget
Use the power budget to calculate the maximum number of devices that the power supply can supply. If more devices are used, additional power supplies must be added to the I/O bus.
Pour plus d'informations, voir Power Budget .
Spécifications
| DC output | |
Voltage
|
24 VDC
|
Accuracy
|
+/-1 VDC
|
Maximum power
|
30 W
|
| AC input | |
Nominal voltage
|
24 VAC
|
Operating voltage range
|
+/- 20 %
|
Frequency
|
50/60 Hz
|
Maximum current
|
2.5 A rms
|
Recommended transformer rating
|
60 VA or higher
|
| DC input | |
Nominal voltage
|
24 to 30 VDC
|
Operating voltage range
|
21 to 33 VDC
|
Maximum power consumption
|
40 W
|
| Terminals | |
|
|
| Environment | |
Ambient temperature, operating
|
0 to 50 °C (32 to 122 °F)
|
Ambient temperature, storage
|
-20 to +70 °C (-4 to +158 °F)
|
Maximum humidity
|
95 % RH non-condensing
|
| Material | |
Plastic flame rating
|
UL94-5VB
|
Enclosure
|
PC/ABS
|
Ingress protection rating
|
IP 20
|
| Mechanical | |
Dimensions including terminal base
|
90 W x 114 H x 64 D mm (3.6 W x 4.5 H x 2.5 D in.)
|
|
|
Weight including terminal base
|
0.285 kg (0.63 lb)
|
Weight excluding terminal base
|
0.186 kg (0.41 lb)
|
Internal Configuration
The PS-24V power supply module does not connect to the address and communication busses in the terminal base. The AC/DC converter terminals L/+ and N/- are isolated from the circuits on the secondary side of the converter. You can wire these terminals without concern for polarity matching, but it is good practice to connect the positive supply voltage to L/+ and the negative supply voltage to N/- in order to prevent confusion.
The earth ground terminal (
Hardware Overview
Electronics Modules
Terminal Bases
PS-24V
Power Supply PS-24V LEDs
Power Budget
Power Supply Overload