BENTLY 3500/60 Temperature Module
Function: Bently Nevada mechanical condition monitoring
Detailed reference description
Six channel 3500/60 (without recorder) processes signals from RTD (resistance temperature detector) and TC (thermocouple).
The 3500/60 can monitor temperature or temperature differences and is typically used for radial or thrust bearing metal temperatures that comply with API670. However, it can also be used for critical process temperatures, such as compressor suction and exhaust temperatures, steam temperatures, motor stator temperatures, etc.
3500/60 adjusts the input and compares the adjusted signal with user programmable set points that can drive alarms and relay logic in the 3500 relay module. External terminal and internal barrier versions are also available.
3500/60 and 3500/61 provide the same functionality, with 3500/61 providing an additional 4-20mA recorder output for each of its six channels.
The 3500/60 and 61 modules provide six channel temperature monitoring and accept two types of resistors
Temperature detector (RTD) and thermocouple (TC) temperature inputs.
The module adjusts these inputs and compares them with user programmable alarm setpoints.
3500/60 and 3500/61 provide the same functionality except that 3500/61 is for each and 3500/60 does not.
The user programs the module to perform RTD or TC temperature measurement configuration software using a 3500 rack.
Different I/O module RTD/TC non isolated or TC isolated versions are provided.
Users can configure RTD/TC non isolated versions to accept any TC or a mixture of TC and RTD inputs.
The TC isolation version provides 250Vdc channel to channel isolation to prevent external interference.
For the third mock examination redundancy (TMR) configuration, temperature monitors must be installed adjacent to each other in groups of three. When used for this configuration, the system uses two types of voting to ensure accurate operation and avoid single points of failure.
System components
For these modules. The remaining 14 slots in the rack can accommodate any combination of monitors, displays, relays, displays, speakers, speakers, microphones, speakers, and/or speakers, as well as keyphasor modules and communication gateway modules.
All modules are inserted into the rack backplane, consisting of a main module and a related I/O module. The I/O module is installed at the rear of the rack for panel mounted systems, and above the main module for partition mounted systems.
The standard rack depth is 349mm (13.75 inches), while the partition mounting rack depth is 267mm (10.5 inches). NEMA4 and 4X weather proof housing are available when environmental protection or air purification is required.
TDI is the main interface software between 3500 racks and configuration, display, and status monitoring. Each rack requires one TDI, located in a slot adjacent to the power supply. TDI supports 3500 configuration software for configuring racks and 3500 operator display software for retrieving rack data and status.
TDI also provides a direct interface with System1 * status monitoring and diagnostic software without the need for an external communication processor.
The rack OK relay is located within the I/O module of TDI. It consists of TDI itself and other modules within the rack. Dozens of possible events within the rack can drive the rack OK relay to a NOTOK state.
Therefore, the rack OK relay is not intended to be used as part of the mechanical automatic shutdown loop and should only be used for general notification purposes.
In addition to the functions provided by TDI, TDI also supports self monitoring of individual monitors, relays, communication, and other modules for itself and the rack. Although TDI provides some universal functions for the entire rack, it is not a part of the protection function for critical monitoring paths and their machines.
TDI has four front panel LEDs that provide the following indications:
OK indicates that the TDI module and its I/O module are operating normally.
TX/RX flashes at the communication rate between TDI and other rack modules.
TM indicates when the rack is in multi trip mode.
Normal configuration indicates that any module in the rack is not configured or has configuration errors; The storage configuration of TDI does not match the physical configuration of the rack; Or rather, the security option conditions have not been met.
The BENTLY Bentley 3500/60 temperature module system configuration is protected by the TDI front keylock switch and two levels of software password protection to prevent unauthorized changes or tampering with configuration settings.
TDI can be connected to a portable computer through the USB communication port on the front panel for local configuration changes. TDI provides a permanent system connection through an Ethernet port.
It also provides front panel DIP switches for assigning unique rack addresses when multiple 3500 racks are connected to each other.
TDI has a system reset switch on the front panel to clear any lock alarms and abnormal lock alarm conditions in the system.
The I/O module provides a set of rear panel connections for remote activation of system reset, trip multiplication, and rack alarm suppression functions.
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