IMDSM04R Digital Slave Input/Output Mod BAILEY

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The Pulse Input Slave Module (IMDSM04) is an interface used to bring eight separate process field signals into the Infi 90 process management system. These pulse inputs are used by master modules to monitor and control a process.
This instruction explains the slave module features, specifications and operation. It details the procedures you must follow to set up and install an IMDSM04 module, and explains status indicators that help in system test and diagnosis. The system engineer or technician using the IMDSM04 should read and understand this instruction before installing and operating the slave module. In addition, a complete understanding of the Infi 90 system is beneficial.

The Pulse Input Slave Module (IMDSM04) brings eight separate pulse signals into the Infi 90 system for processing and monitoring. It interfaces process field inputs with the Infi 90 Process Management System. Master modules provide the control functions; slave modules provide I/O to the master modules.
This manual explains the purpose, operation and maintenance of the Pulse Input Slave Module (DSM). It addresses handling precautions and installation procedures. Figure 1-1 illustrates the Infi 90 communication levels and the position of the DSM module within these levels.

IMDSM04

The DSM has a single printed circuit board that occupies one slot in a Module Mounting Unit (MMU). Two captive screws on the module faceplate secure the DSM to the MMU. The slave module has three card edge connectors for external signals and power (P1, P2 and P3). P1 connects to common (ground) and +5 VDC power (refer to Table 5-1). P2 connects the module to the slave expander bus to communicate with a master module (refer to Table 5-2). The pulse signals input through connector P3 using a cable connected to a Termination Unit (TU) or Termination Module (TM) (refer to Table 5-3). The terminal blocks (physical connection points) for field wiring are on the TU/TM.
Each input can respond to either 4 to 6 VDC or 21.6 to 27 VDC and either the rising or falling edge of the signal. In addition, channels 1 and 2 can be routed through preamplifiers so they can respond to inputs from 50 mV (peak to peak) to 10 V (peak to peak).
The DSM set up information goes into an MFP using function codes. Use either a configuration tuning module or an operator interface unit. Function codes start the three modes of DSM operation. The three operating modes are: Totalize, Frequency, or Period. Configure the MFP to set the DSM inputs for one of these modes. Refer to Section 4 for more information.

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