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- Overview
- Specifications
- Description
- Applications
- Operation
- FAQ
- Recommended Products
Overview
Place of Origin: |
Sweden |
Brand Name: |
ABB |
Model Number: |
NDSM05 |
Packaging Details: |
Original new Factory Sealed |
Delivery Time: |
5-7 days |
Payment Terms: |
T/T |
Supply Ability: |
In stock |
Specifications
|
Parameter |
Specification |
|
Model |
NDSM05 |
|
Dimensions |
3.5 × 31.3 × 17.6 cm |
|
Weight |
0.28 kg |
|
Device Type |
Bailey NET90 Digital Slave Module |
|
Mounting |
Single slot spacing in standard Module Mounting Unit |
|
Certification |
CSA certified for process control equipment in ordinary (non-hazardous) locations |
|
Environmental |
Standard environmental specifications apply (see CE93-9000) |
|
Power Supplies |
5 V module supply (±5% variation), 24 V I/O supply (21.6–26.4 V max variation) |
|
Current Consumption |
757 mA (typical), 867 mA (maximum) from ±5 V DC |
|
Power Dissipation |
4.6 W (logic), 5.0 W (I/O) |
|
Input Voltage Levels |
24 V logic high: 1 V I/O min; 24 V logic low: 0.16–1.65 V max |
|
Input Current Levels |
24 V logic low: -11.8 mA, 24 V logic high: 100 μA max (source circuit) |
|
Output Voltage Levels |
24 V logic low: 1.0 V typical (sink current 120 mA max), 24 V logic high: 0.4 V typical |
|
Output Current |
24 V maximum sink current: 120 mA |
|
Propagation Delay |
Typical: Input low→high 50 μs, high→low 25 μs; Output high→low 25 μs, low→high 100 μs |
|
Pin Connections |
Refer to Tables 8, 9, 10 |
|
Isolation Voltages |
150 V RMS (channel to channel), 150 V RMS (channel to system/logic) |
|
Surge Withstand |
Meets IEEE Std 472-1974 guide for input/output channels |
|
Maximum Wire Size |
12 AWG (from field wiring to TDI01) |
Description
The Digital Slave Module DSM05) occupies a single slot in a NETWORK 90 Module Mounting Unit (MMU). As Figure 1 shows, the DSM05 consists of a front panel and a single printed circuit card. Behind the front panel of the module are two types of solid state, Light Emitting Diodes (LEDs): a "status" LED and two sets of eight "group signal" LEDs. The user can read the LEDs through the plastic front-plate of the front panel. A thorough description of these LEDs is in the "Indicators" section of this publication. Functionally, the DSM05 is an I/O "slave" interface that works with either of two "masters": the Mult-Function Controller (MFC) or the Logic Master Module (LMM). These masters monitor the two groups of eight digital input or digital output signals that the DSM05 handles.
Applications
Power plants: Process monitoring of thermal power plants and substations.
Petrochemical plants: Logic interlocking of oil refineries and chemical production lines.
Paper and mining plants: Digital signal monitoring of large-scale production equipment.
Water treatment plants: Distributed system control of pumping stations and treatment facilities.
Operation
1. Normal Operation
During normal operation, either master "queries" the DSM05 to determine the configuration and state of the signal groups. The master: Makes sure the state of the group (input or output) as configured in the master matches the state defined by the configuration switch on the slave. Reads the state of the input group(s). Sets the state of the output group(s). The DSM05 drives the "status" LED on its front panel green to show that the system is operating normally. The module also uses 16 front panel, "group signal" LEDs to show whether the input/output signals are "on" or "off."
2. Default Operation
During "default" the DSM05 performs either of two special functions. Should either master fail (or be removed from the system), the DSM05 control logic either drives all outputs to a preset "default" state or holds the state of the outputs as they were when the default occurred (depending on the setting of the module configuration switch; see the "Setting the Module Configuration Switch" section of this publication). The DSM05 also drives its "status" LED to red and lights the "group signal" LEDs to show which outputs are on.
FAQ
Q: What is NDSM05?
A: NDSM05 is a Bailey NET90 Digital Slave Module.
Q: Can NDSM05 replace NDSM01?
A: Functionally similar, but specifications may differ. System terminal unit compatibility must be checked before replacement.
Q: Why can't the system recognize the NDSM05 after it's plugged in?
A: Check the DIP switches/jumps on the module. The new module's address must match the old module for the system to mount correctly.
Q: Does this NDSM05 support 120V AC input?
A: No. It is a 24V DC module; high-voltage input will burn out the internal optocoupler.
