4
Drawing No. LP1155
Effective 06 2020
POWER SUPPLY REQUIREMENTS
The DA50A Gateway requires a 12-24 VDC power supply. Your
unit may draw considerably less than the maximum rated power
depending upon the configuration and features being used. Your
unit will draw increased power with a sled installed. Items that
could cause increases in current are microSD card, communications
sleds, and other features programmed through software.
To ensure you do not exceed the capacity of your DA50A
Gateway host power supply, calculate the total power consumption
required for all planned accessories.
It is very important that the power supply meets the following
requirements and is mounted correctly if the unit is to operate
reliably. Please take care to observe the following points:
– The power supply must be mounted close to the unit, with
usually not more than 6 feet (1.8 m) of cable between the
supply and the Gateway. Ideally, the shortest length possible
should be used.
– The wire used to connect the Gateway power supply should
be at least 22-gauge wire. If a longer cable run is used, a
heavier gauge wire should be used. The routing of the cable
should be kept away from large capacitors, inverters, and
other devices which may generate significant electrical noise.
– Use a power supply with an NEC Class 2 or Limited Power
Source (LPS) and SELV (safety extra-low voltage) rating. This
type of power supply provides isolation to accessible circuits
from hazardous voltage levels generated by a mains power
supply due to single faults. Safety extra-low voltage circuits
shall exhibit voltages safe to touch both under normal
operating conditions and after a single fault, such as a
breakdown of a layer of basic insulation or after the failure of
a single component has occurred.
– Peak efficiency (DA50A) occurs at the low side of the voltage
range (approx. 12 V), recommended for high temperature
applications.
Visit www.redlion.net for a complete list of our NEC Class 2
power supplies.
WIRING
All power, input and output (I/O) wiring must be in accordance
with Class I, Division 2 wiring methods and in accordance with
the authority having jurisdiction.
CONNECTING TO EARTH GROUND
Each DA50A has a chassis ground terminal on the top of the
unit. Your unit should be connected to earth ground. Steps should
be taken beyond connecting to earth ground to eliminate the
buildup of electrostatic charges.
The chassis ground is not connected to signal common of the
unit. Maintaining isolation between earth ground and signal
common is not required to operate your unit. But, other equipment
connected to this unit may require isolation between signal
common and earth ground. To maintain isolation between signal
common and earth ground care must be taken when connections
are made to the unit. For example, a power supply with isolation
between its signal common and earth ground must be used. Also,
plugging in a USB cable may connect signal common and earth
ground.
1
1
USB’s shield may be connected to earth ground at the host.
USB’s shield in turn may also be connected to signal common.
D
A50A PORT PINOUTS
FACTORY RESET BUTTON
The factory reset button located in the lower left area of the
front of the unit can be used to clear the configuration. Hold in
the reset button at power up until the status ring LED turns bright
white. Click the button to cycle through colors on the status ring
LED. If left at white, the unit will boot its existing configuration,
and if left at red it will clear the units memory. Once the memory
is cleared, the user will need to use the default password printed
on the unit to access the configuration.
CONFIGURING A DA50A
The DA50A can be configured using Crimson
®
3.2 software.
Crimson is available as a no charge download from Red Lion’s
website. Crimson updates for new features and drivers are posted
on the website as they become available. By configuring the
DA50A using the latest Crimson version, you are assured that
your unit has the most up to date feature set. Crimson software
can configure the DA50A through the Serial programming port,
USB device port, Ethernet ports or microSD card.
The microSD card can be used to program a DA50A by placing
an image file on the microSD card. The card is then inserted into
the target DA50A and powered. Refer to the Crimson 3.2 User
Manual for more information on the proper names and locations
of this file.
CAUTION: Only UL listed wiring with temperature
ratings greater than 90 °C permitted for Class I, Division
2, Zone 2 and ATEX/IECex installations.
ATTENTION: Seul le câblage homologué UL avec des
températures nominales supérieures à 90°C est autorisé
pour les installations de classe I, Division 2 , zone 2 et
ATEX/IECex.
CONNECTOR
POR
T 1
ETHERNET PORTS
MICRO SD CARD
USB DEVICE
POR
T 1
SERIAL PORTS
RESET BUTTON
POR
T 2
POR
T 2
COMM
COMM
CTS (PIN 1)
RTS (PIN 6)
Tx
Rx
COMM
TxA (PIN 8)
TxB (PIN 1)
RxA
RxB
TxB
TxEN
TxA
MICRO
SD CARD
LED
3
5 4
1
2
ANALOG/DIGITAL
INPUT
DIGITAL OUTPUT
+ -
POWER INPUT
