DSQC661 3HAC026253-001 Industrial control spare parts ABB module
Technical data of product parameters
DSQC661 3HAC026253-001 contains a single printed circuit board assembly with eight fused
two-wire loop-powered or non-fused active-source (four-wire isolated current
output) transmitter inputs. Eight user servicable fuses (one fuse for each analog
input channel) are located on the personality module. Each fuse is used to
protect the auxiliary power supply only if the associated analog input channel is DSQC661 3HAC026253-001
connected to a tDSQC661 3HAC026253-001wo-wire loop powered current transmitter.The Ovation HART Analog Input Module assembly consists of two modules, an
electronics module containing a logic printed circuit board (LHA) and a field
printed circuit board (FHI). The simplified block diagram for the FHI field board is
shown in Figure 13-1. The electronics module is used in conjunction with a
personality module, which contains a single printed circuit boardThe HART Analog Input Module utilizes the standard +24V Ovation main power
supply to provide the power required for the logic circuitry.
The HART Analog Input Module utilizes a +24 auxiliary power supply to provide
the power required for the field circuitry. This includes all 4-20 mA loop power, DSQC661 3HAC026253-001
A/D conversion, and the remaining output channel components.
It is recommended that the HART Analog Input module utilize the Ovation
cabinet’s Auxiliary +24V DC power that is obtained from the standard Ovation DIN
Rail power supply auxiliary output.
However, if an external auxiliary power supply is utilized by the HART analog input
module, the power supply noise output must meet the following requirements.If an external supply is utilized to provide auxiliary power, see Appendix D for the
steps to be taken before connecting the external power supply to the Ovation I/O
base unit terminal block.
Product picture display
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