The main products

Spare parts spare parts, the DCS control system of PLC system and the robot system spare parts,

Brand advantage: Allen Bradley, BentlyNevada, ABB, Emerson Ovation, Honeywell DCS, Rockwell ICS Triplex, FOXBORO, Schneider PLC, GE Fanuc, Motorola, HIMA, TRICONEX, Prosoft etc. Various kinds of imported industrial parts

Products are widely used in metallurgy, petroleum, glass, aluminum manufacturing, petrochemical industry, coal mine, papermaking, printing, textile printing and dyeing, machinery, electronics, automobile manufacturing, tobacco, plastics machinery, electric power, water conservancy, water treatment/environmental protection, municipal engineering, boiler heating, energy, power transmission and distribution and so on.

SYHNC100-NIB-2X/W-24-P-D-E23-A012 Driver module

When the Remote mode is selected the 505 can be operated through its front panel, contact inputs, and/or all Modbus commands. When using a contact input to select between Local and Remote modes, a closed contact input selects the Remote mode and an open contact input selects the Local mode. Optionally a relay can be programmed to indicate when Local mode is selected (energizes when the Local mode is selected). There is also indication of the Local/Remote mode selection through Modbus (address = true when the Remote mode is selected and false = when the Local mode is selected). The 505 is defaulted to only allow control operation though its front panel when the Local mode is selected. If desired, this defaulted functionality can be changed through the 505’s Service mode. The 505 can be modified to also allow operation through contacts inputs, or Modbus port #1 or Modbus port #2 when the Local mode is selected. All pertinent local/remote control parameters are available through the Modbus links. See Chapter 6 for a complete listing of all Modbus parameters.

Local/Remote Function

 The 505’s Local/Remote function allows an operator at the turbine skid or 505 to disable any remote command (from a remote Control Room) that may put the system in a unsafe condition. This function is typically used during a system start-up, overspeed test or shutdown to allow only one operator to manipulate the 505 control modes and settings. The Local/Remote function must first be programmed before a Local or Remote mode can be selected by an operator. This function can be programmed under the OPERATING PARAMETERS BLOCK. If this function is not programmed all contact inputs and Modbus commands (when Modbus is programmed) are active at all times. If the Local/Remote function is programmed, Local and Remote modes can be selected through a programmed contact input, or Modbus command.

For users familiar with the previous 505 version with 2-line displays, this feature is slightly different. In this 505 model, Modbus commands are inhibited when in local mode unless the “Enable When Local” Service settings is selected. This is available for each Modbus link. Note that the trip command and “Local/Remote” command are no longer exceptions to this rule. All addresses for the link will be considered either Local or Remote commands.

Relays 

The 505 has eight relay outputs available. The first of these relays is dedicated for a system shutdown command from the 505. The second relay is configurable, but is defaulted for an alarm indication. The other six relays can be programmed for a variety of indications, and system functions. For fail-safe operation, the dedicated Shutdown relay is energized during normal system operation, and will de-energize when a shutdown occurs. The dedicated Alarm relay is normally de-energized. This relay will energize upon an alarm condition and stay energized until the alarm condition is cleared. Optionally this relay can be configured, through the 505’s Service mode, to toggle on and off repeatedly when an alarm conditions has occurred. With this configuration if a reset command is given and the alarm condition still exists, the relay will stop toggling and stay energized. The relay will start toggling again, upon a new alarm condition. This option can be used to inform the operator when another alarm condition has occurred. Any of the configurable relays can be programmed to function as a level switch or mode indication. When programmed as a level switch the relay will change state when the selected parameter reaches the programmed level (energizes when value is higher the programmed level).