Spectrum Controls 1746sc-NI8u - Manual (Page 22)

10 SLC 500 ™ Universal Analog Input Module
Table 2.1. Maximum current drawn by the
module
5VDC Amps 24VDC Amps
0.120 0.100
When using the module in a modular system, add the values shown
above to the requirements of all other modules in the SLC to prevent
overloading the chassis power supply.
When using the module in a fixed controller, be sure not to exceed
the power supply rating for the 2-slot I/O chassis.
Considerations for a Modular System
Place your module in any slot of an SLC-500 modular, or modular
expansion chassis, except for the left-most slot (slot 0) reserved for
the SLC processor or adapter modules.
Considerations for a Fixed Controller
The power supply in the 2-slot SLC 500 fixed I/O chassis (1746-A2)
can support only specific combinations of modules. Make sure the
chassis power supply can support the NI8u and additional module
power requirements.
S h u n t S h u n t S h u n t S h u n t S h u n t
C o n f i g u r a t i o n C o n f i g u r a t i o n C o n f i g u r a t i o n C o n f i g u r a t i o n C o n f i g u r a t i o n The 1746sc-NI8u module is a multi-purpose, multi-functional
module, that is capable of supporting many different input types in a
very small package. There are a few shunts on the board that allow
the user to define input paths properly, which are imperative for the
configuration control to allow proper utilization of the module. JP1
through JP8 supports the current input mode options of each of the
inputs channels, 0 through 7, respectively. In order to define
channels 4 through 7, JP9 and JP10, must be configured properly.
JP11 is used at the factory and should not be modified. JP12
indicates whether or not RTD or resistance inputs are to be used in
the configuration. The module is shipped with all current input
shunts in place, and the remaining shunts installed for non-RTD or
resistance inputs. The shunts are to be modified prior to installation
of the module. Proper precautions for electrostatic handling should
be followed. Small needlenose pliers may be used to configure the
shunts, if needed.
A A A A ATTENTION: TTENTION: TTENTION: TTENTION: TTENTION: Never touch the module without
being properly strapped and connected to ground.
Electrostatic damage may result.
!