ICS Regent+Plus
®
PD-6050
High Integrity Power Supply Assembly
110-240 VAC and 24 VDC
(T8060, T8062)
Issue 2,
The power supply assembly (see Figure 1) converts redundant main-line
voltages of either 110-240 VAC or 24 VDC to +15 VDC or +24 VDC
ou
tput power for ICS product power requirements.
March, 06
Industrial Control Services
Figure 1. Power Supply Assembly
Features
·
Redundant power inputs
·
250 W
·
Hot replaceable
·
Current sharing
·
Power factor correction
·
Front panel indicators for input, output voltage status and
output current level on each module
·
Ext
·
TÜV certified for safety, Risk Class 5
1
ernal status signals
I/O Power Supply Assembly (T8060,T8062)
Structure
The power supply assembly consists of a power supply chassis containing
up to six power supply modules. The chassis may be configured to
distribute power in various combinations. For example, a chassis containing
six power supply modules may be set up with three modules providing
triplicated power for Regent+Plus I/O assemblies and three modules
providing field power in a N+1 configuration.
Power Supply
Chassis
The power supply chassis houses a maximum of six power supply modules.
It may be mounted in a 19-inch rack or flush mounted on a panel. Table 1
identifies the available types of chassis.
Table 1. Chassis Types
Power Supply Modules
The power su
pply assembly modules are single (if redundant inputs are not
required) and dual input, hot swap, user-replaceable AC and DC units.
Table 2 identifies the available types of modules.
Table 2. Module Types
2
Industrial Control Services
I/O Power Supply Assembly (T8060,T8062)
PFC
PFC
Power Supply Module
PWM
Switching Regulator
T1:a
T1:c
T1:b
Rectifier
Rectifier
DC
Output
I/P Filter & Protection
I/P Filter & Protection
PFC A Off
I/P A Fail
PFC A Fail
Source
A
Source
B
Fail
High Tempterature
Reset
O/P Current
Status & Control
Remote Off
PFC B Off
I/P B Fail
PFC B Fail
Status & Control
Power Supply Module
DC
Output
I/P Filter & Protection
I/P Filter & Protection
PWM
Switching Regulator
T1:a
T1:b
I/P A Fail
Fail
High Tempterature
Reset
O/P Current
Status & Control
Remote OffI/P B Fail
Status & Control
Source
A
Source
B
The dual inputs on the AC modules are galvanically isolated from each
other. The inputs on the DC modules are diode isolated and share a
common return.
Input Power Regulation
A block diagram of a typical dual AC input I/O power supply module is
shown in Figure 2. A block diagram of a typical dual DC input I/O power
supply module is shown in Figure 3.
Figure 2. Block Diagram of an AC I/O Power Supply Module
PD-6050
Figure3. Block Diagram of a DC I/O Power Supply Module.
Mar-06
3
I/O Power Supply Assembly (T8060,T8062)
Each primary power input is individually fused and filtered with both
standard line filters and metal oxide varistors ( MOVs). The filters attenuate
any high-frequency common mode and normal mode noise present in the
power distribution system. The MOVs clamp high-voltage transients.
Filter, rectifier, and power factor correction circuits convert primary AC
input power to bulk DC voltage. The switching regulator converts bulk DC
power to regulated DC output voltage. Sensing, status, control, and timing
circuits provide for the following:
·
Input power failure - Active low status output. Indicates when the
input voltage is below 85 VAC or 18 VDC. There is a separate signal
for each input.
·
Bulk power failure - Active high status output on AC input modules
only. Indicates the DC bulk voltage (PFC output) is outside the
specified range. There is a separate signal for each input.
·
High-temperature warning alarm - Both an active high and active
low status output are provided. Indicates the module temperature
exceeds 75°C. The temperature is sensed near the air inle
the module.
·
High-temperature shutdown - Internal signal that will shut down the
t (bottom) of
switching regulator if module temperature is above 85 °C. The
temperature is sensed near the air inlet (bottom) of the module.
·
Output overvoltage - Internal signal that will shut down the switching
regulatorif the output voltage exceeds +18 VDC or +28 VDC for 15
volt and 24 volt modules respectively. Over-voltage protection circuitry
activation is a permanent error condition, requiri
to return module to normal operation.
·
DC output fail - Active high status output indicates the DC output
ng manual intervention
voltage has gone out of regulation. The DC output fail threshold is
13.75 VDC and 21.75 VDC (±0.25 VDC) for the 15 and 24 volt
module respectively.
·
Output current limiting - Internal signal limits output current in
excessive current demand situations.
4
Industrial Control Services
I/O Power Supply Assembly (T8060,T8062)
·
POWER FAIL - Active high status signal that indicates impending loss
of output power due to one
-
Both inputs have indicated power failure
-
Remote off control signal activated
-
Thermal shutdown
-
Output overvoltage
·
RESET - Active high status signal that is generated a minimum of 10
of the following:
ms (AC input module) or 0.5 ms (DC input module) after a POWER
FAIL signal. RESET remains asserted for 200 ms (minimum) after
module power-up.
·
PFC off - Active low input that turns off the power factor correction of
an individual input. This signal provides the capability to test the input
circuitry
monitoring the module fail signal
of a module by turning off each input independently while
·
Remote off - Active low input that turns off the output power of a
module.
Note: Bulk Power Fail, PFC Off and Remote Off are accessed through the
monitor module connector on the chassis backplane. The monitor module
connector allows for a future development of a monitor card that would
provide remote control and enhanced monitoring of the power supply
chassis.
Active low signals are not maintained while RESET is act
signals are open collector and require external pull-up resistors.
ive. All status
RESET is used in the Regent I/O transceivers for power system interlocking
within the I/O system. A power failure (either input power or module fault)
activates RESET and turns off the DC output front panel indicator.
The POWER FAIL and RESET signals are required for proper operation
of Regent I/O transceivers and I/O modules during power up, power down,
and loss of power. Refer to
connect these signals to a Regent I/O chassis.
Assembly Installation
for details on how t
o
PD-6050
Mar-06
Front Panel Indicators
The front panel of each I/O power supply module contains the following
indicators:
5