MicroNet Safety Module - Bulkhead Mount 8237-2492 Woodward

MicroNet Safety Module - Bulkhead Mount  8237-2492 Woodward

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

10.

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: 

o 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.  

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

o 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. 

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

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

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

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

o 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:  

o Local and Shared Start 

o Local and Shared Reset 

o Local and Shared Speed Fail Override 

o ARM block Difference Detected 

o Outputs from the new analog blocks 

MicroNet Safety Module - Bulkhead Mount, HV/LV, Independent Relays

8237-2492

MicroNet Safety Module - Bulkhead Mount, HV/HV, Independent Relays

8237-2493

MicroNet Safety Module - Bulkhead Mount, HV/LV, Voted Relays

8237-2494

MicroNet Safety Module - Bulkhead Mount, HV/HV, Voted Relays

8237-2495

MicroNet Safety Module - Panel Mount, HV/LV, Independent Relays

8237-2496

MicroNet Safety Module - Panel Mount, HV/HV, Independent Relays

8237-2497

MicroNet Safety Module - Panel Mount, HV/LV, Voted Relays

8237-2498

MicroNet Safety Module - Panel Mount, HV/HV, Voted Relays

*Documentation: Product Spec: 03375. Manuals: 35060V1. 35060V2. 26712

8237-2499

Conversion Kits

Old ProTech-GII models to new ProTech-GII models - Refer to PCN 06946 for details/limitations

8929-039

Old ProTechTPS models to new Input Voting ProTechTPS - Refer to PCN 06947 for details/limitations

8929-037