ICON LevelPro ITC 450 Series Quick Start Manual page 9

ITC 450 / ITC 470 SERIES
LevelPro — ITC 450 & 350 Series
®
Industrial Level Controller
ITC 450 / ITC 470 SERIES
Tank Level Display + Controller
Industrial Level Controller
The connec�on circuit should not be changed while unit is powered. While using TC, RTD or voltage
inputs (0-150mV) the device is able to detect wire breaks. Wire breaks are detected within about 2
Wiring Diagrams
seconds. For connectors number 32 and 33 of RTD input it may take up to about 7 seconds. During
detec�on measurements will be incorrect. If wire break is detected "S.Err" (sensor error) message is
The connec�on circuit should not be changed while unit is powered. While using TC, RTD or voltage
displayed.
inputs (0-150mV) the device is able to detect wire breaks. Wire breaks are detected within about 2
The connection circuit should not be changed while unit is powered. While using TC, RTD or voltage inputs (0-150mV)
seconds. For connectors number 32 and 33 of RTD input it may take up to about 7 seconds. During
the device is able to detect wire breaks. Wire breaks are detected within about 2 seconds. For connectors number 32
detec�on measurements will be incorrect. If wire break is detected "S.Err" (sensor error) message is
and 33 of RTD input it may take up to about 7 seconds. During detection measurements will be incorrect. If wire break is
displayed.
detected "S.Err" (sensor error) message is displayed.
Contacts of relay outputs are not equipped with spark suppressors. While use the relay outputs for
switching of induc�ve loads (coils, contactors, power relays, electromagnets, motors etc.) it is required to
use addi�onal suppression circuit (typically capacitor 47nF/ min. 250VAC in series with 100R/5W resistor),
Contacts of relay outputs are not equipped with spark suppressors. While use the relay outputs for switching of inductive
connected in parallel to relay terminals or (be�er) directly on the load. In consequence of using the
Contacts of relay outputs are not equipped with spark suppressors. While use the relay outputs for
loads (coils, contactors, power relays, electromagnets, motors etc.) it is required to use additional suppression circuit (typically
capacitor 47nF/ min. 250VAC in series with 100R/5W resistor), connected in parallel to relay terminals or (better) directly on the
suppression circuit, the level of generated electromagne�c disturbances is lower, and the life of relay
switching of induc�ve loads (coils, contactors, power relays, electromagnets, motors etc.) it is required to
load. In consequence of using the suppression circuit, the level of generated electromagnetic disturbances is lower, and the
contacts rises.
use addi�onal suppression circuit (typically capacitor 47nF/ min. 250VAC in series with 100R/5W resistor),
life of relay contacts rises.
connected in parallel to relay terminals or (be�er) directly on the load. In consequence of using the
suppression circuit, the level of generated electromagne�c disturbances is lower, and the life of relay
contacts rises.
24-0352 © Icon Process Controls Ltd.
All connections must be made
while power supply is disconnected.
Figure Q. — Connection of power supply and relays
Figure R. — Examples of suppression circuit connection:
a) to relay terminals; b) to the inductive load
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