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Ambient conditions
• Working temperature:
0 to 80°C (see the dissipation curves)
• Max. relative humidity: 50%...40°C
• Max. installation altitude:
2000m asl
• Pollution level: 3
• Storage temperature: -20...85°C
• Max. air surrounding: 40°C
Installation notes
Use the high-speed fuse specified in the
catalog according to the connection
example given.
Applications with solid state relays must
provide an automatic safety switch to cut
power to the load.
In order to obtain best reliability, it is
important to install a heatsink correctly
inside the panel, to reach an adequate
thermal exchange between the device
FACEPLATE DESCRIPTION
1 2 3 4
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9
5
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HEATER BREAK (Hb) ALARM FUNCTION
The heater break (Hb) alarm function lets the instrument diagnose a drop in load current (II) below a settable limit (It) during
operation.
The unit in short circuit is also diagnosed by monitoring any current conducted in the absence of the control signal.
Setting the alarm
The full scale (maximum value) of the limit is set with the dip switches located under the instrument cover.
With the single-turn trimmer, you can shift the set point from 0% (turning the trimmer clockwise) to 100% (turning the trimmer
counterclockwise) on the set full scale.
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and the surrounding air in natural
convection conditions.
Mount it vertically (max. 10° dinclination
from the vertical axis)
• Vertical distance between a device and
the panel walls >100mm
• Horizontal distance between a device
and the panel walls: at least 20mm
• Vertical distance between devices: at
least 300mm.
• Horizontal distance between devices: at
least 20 mm. Make sure that the wire
raceways do not reduce such distances:
if they do, install the groups cantilevered
to the panel so that air can flow vertically
over the heat sink without obstructions.
Limits of use
• Dissipation of thermic power on the
device with restraints on the ambient
temperature of the installation.
• Equip the cabinet with an external air
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change or air-condition it, to put out
dissipated power.
• Installation restraints (distances to be
respected to grant dissipation with natural
convection).
• Line transistor max. voltage and
derivative limits, for which the power solid
state relay is equipped with inside safety
devices (based on the models).
• Leakage current < 3mA
(max. value with rated voltage and
junction temperature of 125°C).
1:
Aux. power supply 24Vdc (Vs)
2:
Common (0V)
3:
Control signal (+)
4:
Alarm output
5:
Load terminal
6:
Ground terminal
7:
Line terminal
8:
2-color signal LED (red/yellow)
9:
Internal trimmer to set Hb
diagnostics setpoint
10: Dip switch to select Hb diagnostics
scale
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11: LAB-1 relay ID label
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