Woodward MicroNet Safety Module (MSM)

MicroNet Safety Module (MSM)

Overview

On January 30. 2018. Woodward will be releasing new “preferred” MSM models and a new Field

Software Conversion kit. The new MSM models include the same functionality as the older MSM

models but include many product improvements and enhancements requested by product line

users throughout the past years. After January 30. 2018. Woodward recommends customers who

are purchasing MSM units for use in new applications order part numbers from the “preferred”

part number list only.

This MSM software update provides enhanced math/computational functionality and adds over

100 logic blocks for use when programming this safety logic solver for a specific application.

The new Field Software Conversion kit can be purchased and used to upgrade/convert older

MSM models in the field to the new “preferred” MSM models by simply uploading/installing the

latest software program. Refer to below description of changes for a list of the improvements and

enhancements available. Refer to product manuals 35060v1 & 35060v2 for detailed product

information on these new “preferred” MSM models. Description of Changes

Description of Changes

New features

The following new computational blocks were added:

1. MULTIPLY block. Provides the product of all configured inputs. Up to five inputs per block.

Quantity 5.

2. DIVIDE block. Performs a divide function on the two inputs. Quantity 5.

3. ADD block. Provides the sum of all configured inputs. Up to five inputs per block. Quantity 5.

4. NEGATE block. Supports subtraction functionality by providing the negative value of the input.

Quantity 10.

Added the following new support blocks:

1. CURVE block (polygon): A 2-dimensional lookup based on a single, configured analog input. Up

to six breakpoints (coordinate pairs) can be defined. Values between breakpoints are

interpolated. Values beyond table-defined min or max are limited - equal to first or last point,

respectively; Quantity 2.

2. SWITCH block: Outputs one of two analog input values based on the status of the control input.

Example usage: selecting a default value for a calculation if an analog input is failed; Quantity

3. CONSTANT block: Allows definition of a fixed analog value to be used in conjunction with the

math/analog blocks; Quantity 40.

4. ANALOG UNIT DELAY block: Loop breaking block for analog signals, to define execution order.

Asserts a unit delay; Quantity 10.

5. COUNTER block: Provides a count indication as well as a comparison output which indicates

when a count threshold is exceeded; Quantity 10.

6. PEAK HOLD block: Captures and holds both maximum and minimum signal values; Quantity 10.

7. PULSE DETECT block: Monitors an analog signal and is used to detect a sudden rise in value

followed by a drop. The output indicates a pulse was detected; Quantity 5.

8. EVENT FILTER block: Provides an indication that an excessive number of events have occurred

within the defined window of time. Typically used in conjunction with the PULSE DETECT;

Quantity 5.

Changes to existing logic blocks:

Speed Loss (sudden speed loss): made the failure threshold configurable and expanded the

action selection to include ‘not used’.

Analog Output: Changes the source for the analog output to be configurable, allowing it to be

connected to analog logic blocks.

Analog Redundancy Manager: Added a difference detection to the Analog Redundancy Manager

blocks, providing a difference comparison between the three inputs. The difference indication is

provided if the threshold is exceeded for the configured time delay.

Difference Detect: Modified the block inputs to allow connection to any of the internal analog

logic signals (previously allowed connection to shared input signals only).

Analog Inputs: Increased the allowed range of the analog inputs to +/- 999999.

LAG blocks: Added a derivative (rate of change) output value to the LAG block for use in the

configurable logic. The lag time constant data type was changed from a fixed-selection

enumerated list to a numerical value from 0.004 to 10.

Resettable Trip: Modified the function input to allow connection to any of the internal Boolean

logic signals (previously allowed connection to discrete input 1-10 only).

Auto Sequence Test: Added the test result displayed on the front-panel for the entire sequence,

not just the local module. Removed the Continue Input selection, allowing the Start Input to

provide both functions. Added inter-module halt option.

The analog comparator ON and OFF inputs were modified to allow connection to any of the

internal analog logic signals (previously these were constant values).

Change the User Defined Test set input to edge triggered so the test does not repeat if set is left

true.

Logic execution rate changes: The discrete inputs are scanned at 1 ms (previously 4ms) and the

configurable logic runs at 8ms (previously 4ms).

Note: all speed, acceleration, trip, and output functions are unchanged.

Other Improvements and Additions:

Chinese language support added as a configuration setting.

Increased allowable ranges for speed settings from 32000 to 80000 rpm to facilitate turbo

expander applications. The maximum speed frequency remains at 32kHz.

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

or more of the above listed changes/improvements can send their old MSM model into Woodward

Colorado, USA for a conversion to a new model. Optionally, they can purchase Field Software

Conversion Kit 8929-038 and schedule a field conversion by an authorized Woodward field service

engineer. Please contact your Woodward representative to schedule model conversions.

The following are trademarks of Woodward, Inc.:

MicroNet

ProTech

The following are trademarks of their respective companies:

Modbus (Schneider Automation Inc.)