3
Revised 03 2020
Drawing No. LP1117
Line Filters for input power cables:
Schaffner # FN2010-1/07 (Red Lion #LFIL0000)
6. To protect relay contacts that control inductive loads and to
minimize radiated and conducted noise (EMI), some type of
contact protection network is normally installed across the
load, the contacts or both. The most effective location is
across the load.
a. Using a snubber, which is a resistor-capacitor (RC) network or
metal oxide varistor (MOV) across an AC inductive load is very
effective at reducing EMI and increasing relay contact life.
b. If a DC inductive load (such as a DC relay coil) is controlled
by a transistor switch, care must be taken not to exceed the
breakdown voltage of the transistor when the load is
switched. One of the most effective ways is to place a
diode across the inductive load. Most Red Lion products
with solid state outputs have internal zener diode
protection. However external diode protection at the load is
always a good design practice to limit EMI. Although the
use of a snubber or varistor could be used.
Red Lion part numbers: Snubber: SNUB0000
Varistor: ILS11500 or ILS23000
7. Care should be taken when connecting input and output
devices to the instrument. When a separate input and output
common is provided, they should not be mixed. Therefore a
sensor common should NOT be connected to an output
common. This would cause EMI on the sensitive input
common, which could affect the instrument’s operation.
Visit
for more information on EMI
guidelines, Safety and CE issues as they relate to Red Lion products.
INSTALLATION
Converter DIN Rail Mounting
The DIN rail should be
mounted horizontally so that
the unit’s ventilation holes are
vertical in relation to installation
orientation. A minimum
clearance of 1 inch (25.4 mm)
should be maintained above
and below the unit in order to
ensure proper thermal
regulation. For environments
with vibration or impacts, DIN
rail clamps are recommended.
For hazardous location
installation, the following shall
be taken into consideration:
— The equipment shall only
be used in an area of at least pollution degree 2, as defined in
EN/IEC 60664-1.
— The equipment shall be installed in an enclosure that provides
a minimum ingress protection of IP54 in accordance with EN/
IEC 60079-0. The enclosure shall be accessible only with the
use of a tool.
— Transient protection shall be provided that is set at a level not
exceeding 140% of the peak rated voltage value at the supply
terminals to the equipment.
Recommended DIN Rail Mounting Steps:
1. Ensure the DIN rail lock latch is in the outward most position
(unlocked). Hook the top back of the DA50D DIN rail clip on
the unit over the DIN rail.
2. Push the bottom of the unit towards the DIN rail until the
unit is flush with the rail.
3. Push the DIN rail lock latch to the latched (in) position.
Recommended DIN Rail Removal Steps:
1. Move the DIN rail lock latch to the unlatched (out) position.
2. Unhook the top of the unit and remove it from the DIN rail.
SLED INSTALLATION
1. Prior to installing the Sled for your DA50D Converter
application, ensure that the Converter is not receiving power.
2. Disconnect and remove your DA50D from the DIN rail.
3. Remove the DA50D Converter’s front cap by squeezing the
sides and pulling.
4. Slide out the sled holder.
5. Install a sled into the sled holder and hand tighten the captive
fasteners, or use a screwdriver.
6. Re-install the sled holder containing the sled into the
Converter. Make sure it is fully seated.
7. Replace the front cap.
POWER SUPPLY REQUIREMENTS
The DA50D Converter 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 DA50D
Converter 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 Converter. Ideally, the shortest length possible
should be used.
– The wire used to connect the Converter 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 (DA50D) 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.
DIN RAIL LOCK LATCH
Unlock
Lock
CAUTION
: Follow standard ESD precautionary
procedures.
ATTENTION
: Suivez les procédures de précaution
standard de décharge électrostatique.
CAUTION
: Failure to properly align the sled holder
can result in damage to the connector pins.
ATTENTION:
Si le tiroir n’est pas correctement
aligné, les broches du connecteur du tiroir risquent
d’être endommagées.
