Woodward MicroNet Safety Module (MSM)

A configurable low-pass filter was added to the acceleration signal.

Front Panel Display changes:

Speed display: The precision of the speed value on the front panel provides one decimal

precision when below 100 rpm. Configurable filtering added to the displayed speed value.

Improved front panel performance, providing faster response to a key press.

Analog Input display: Expanded the front panel display of the analog input to show the level

setpoints (e.g. Hi, Lo) as well as all the level status indications.

Trip button (front panel): Toggles display between the Trip Log and the Trip Latch.

Alarm button (front panel): Toggles display between the Alarm Log and the Alarm Latch.

Added Shared Reset, Shared Start, and Shared Speed Fail Override display screens.

Trip Latch inputs were rearranged to display more practical faults first (e.g. overspeed).

Modbus: A) Included the outputs of all analog logic blocks as Modbus analog/register reads.

B) The address numbering (Boolean and register) changed to be consecutive, removing

huge gaps in numbering. C) Added Spare Boolean read registers to prevent errors

experienced by devices that queried in increments of 16. D) Added 20 scalable analog reads,

allowing the user to select the source and set the signal scaling (for very large or very small

analog signals).

Expanded the configurable logic Boolean connections to include both the local and shared

signals for start, reset, and speed fail override.

New logic connections added:

Local and Shared Start

Local and Shared ResetLocal and Shared Speed Fail Override

ARM block Difference Detected

Outputs from the new analog blocks

Configuration Checking enhancements implemented:

Power-up trip (trip relay must be set for de-energize for trip)

configuration mismatch (function must be enabled)

Speed fail alarm (function must be enabled and local speed must enabled)

Speed Fail Trip and Speed Fail Timer (function must be enabled and speed must be

enabled)

GAP Programming Environment Updated

Updated the MSM GAP/simulation tool to include the firmware updates in this release. This tool

allows users to program the MSM using graphical function block code. 9927-2151 Revision B or

newer is required. Refer to manual 26712 for details on this tool.

This tool provides the following:

Graphical view of entire application

Completeness check to ensure the program will be accepted by the device

Documented feedback of the ProTech CRC codes to ensure program ‘fingerprint’ verifying laptop

GAP program & installed ProTech settings

GAP Block help clarifying the function and input/output fields of each block

Built-in simulation on the user PC to allow testing/debugging of logic

Simulation that allows manual entry (control) of Input signals

Compatibility Notes and Table

Field Software Conversion kit 8929-038 is compatible with and can be used to convert most older

MSM models to the newer models listed below. See table below for compatibility information.

Description

Part Numbers that Can Be Converted

MSM – Bulkhead Mount, HV/LV, Ind. Relays

8237‐1252 Rev D or Newer or 8237-1492

MSM – Bulkhead Mount, HV/HV, Ind. Relays

8237‐1253 Rev D or Newer or 8237-1493

MSM – Bulkhead Mount, HV/LV, Voted Relays

8237‐1254 Rev D or Newer or 8237-1494

MSM – Bulkhead Mount, HV/HV, Voted Relays

8237‐1255 Rev D or Newer or 8237-1495

MSM – Panel Mount, HV/LV, Ind. Relays

8237‐1375 Rev D or Newer or 8237-1496

MSM – Panel Mount, HV/HV, Ind. Relays

8237‐1376 Rev D or Newer or 8237-1497

MSM – Panel Mount, HV/LV, Voted Relays

8237‐1377 Rev D or Newer or 8237-1498

MSM – Panel Mount, HV/HV, Voted Relays

8237‐1378 Rev D or Newer or 8237-1499

MSM – Field Software Conversion Kit

8929-038

Only MSM Service Tool (9927-1684 Rev. F or newer) is compatible with both new and old MSM

models. Note that the latest revision of this service tool can be obtained/ downloaded from

Woodward’s website

Configuration files from older MSM models can be loaded into new MSM models using the MSM

service tool. However, configuration files from new MSM models cannot be loaded into older MSM

models.

Preferred Model Numbers

The following table shows the new/improved “preferred” MSM part numbers:

Description

Non-Preferred

Part Number

Preferred Part

Number

MSM – Bulkhead Mount, HV/LV, Ind. Relays

8237-1492

8237-2492

MSM – Bulkhead Mount, HV/HV, Ind. Relays

8237-1493

8237-2493

MSM – Bulkhead Mount, HV/LV, Voted Relays

8237-1494

8237-2494

MSM – Bulkhead Mount, HV/HV, Voted Relays

8237-1495

8237-2495

MSM – Panel Mount, HV/LV, Ind. Relays

8237-1496

8237-2496

MSM – Panel Mount, HV/HV, Ind. Relays

8237-1497

8237-2497

MSM – Panel Mount, HV/LV, Voted Relays

8237-1498

8237-2498

MSM – Panel Mount, HV/HV, Voted Relays

Customer Action

8237-1499

8237-2499

Customers who are currently using any MSM model and do not require any of the above listed

changes/improvements should take no action. Woodward is committed to supporting the listed “non

preferred” models for a period of 20 years after inactivation. Refer to the related product support plan

for these models.

After January 30. 2018. Woodward recommends that customers who are purchasing MSM units for use

in new applications order part numbers from the “preferred” part number list only.

After January 30. 2018. customers who currently own an older MSM model and wish to have/utilize one