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What is a interposing relay?
In general, a DCS or PLC, handles numerous discrete I/Os. One common I/O module (board) is used to supply 8, 16 or more points. Discrete output circuits from a DCS typically use low power level signals (transistors, micro relays) which cannot be sent directly to the field devices such as electromagnetic valves or motor control circuits. That is why interposing relays are often necessary. These relays play an important role by amplifying the current capacity of the contact signal of the I/O module allowing larger current flow. In addition, discrete input circuits normally can handle only dry contacts or wet contacts of low voltage, which also require interposing relays. For example, let's say the relay of a PLC can only accommodate 0.5A at 220 VAC, but the solenoid which is to be connected to the relay requires 1.2A at 220 VAC. In this case, an interposing relay with contacts rated for operation at 1.2A at 220 VAC would be used as an interposing relay "between" the PLC relay and the solenoid. The coil of the interposing relay should require less voltage and current than the driving relay is rated for, and the contacts of the interposing relay must be rated to handle the requirements of the load (solenoid, light, contactor, motor, etc.).
What is the purpose of a power distribution box on a Ford Exp.sports 4x4?
It's a fuse and relay panel.
What is difference between interposing voltage transformer and potential transformer?
potential transformer is to maser and protection purpose the ivt is used for synchronicing purpose
Where is the instrument panel relay on a 1994 ford escort?
Where is the instrument panel relay located on a 1994 ford escort
Location of the 13-position relay panel on a 1998 VW Beetle?
The relay panel is located under the dash board, above the drivers feet, remove the lower cover panel to access relay box.
Overdrive relay location 760 Volvo?
Up through 87 the relay was located behind the ashtray behind the fuses. 88 and up, the relay panel is accessed from the passenger side panel on the side of the center concol. If earlier version, relay "I" - if behind side panel, relay "G".
What is the purpose of an automotive relay?
The Purpose of a Relay is to control multiple electrical components at once.
Where do you find the turn signal relay on a 2000 Dodge Durango?
Dodge Durango turn signal relay locationThat relay is on a hidden panel, behind the interior fuse panel you access by opening the driver's door. You get to the hidden panel from under the dashboard, and it will be the 5 pin relay at the very top of the panel. I replaced this relay on my 2000 Durango to restore the turn signals just yesterday.
How do you get to glow plug relay on a 1991 VW golf diesel?
Inside cab, to the left of the steering column under the dash is the relay / fuse panel. On that panel is the glow plug relay.
Where is the window relay on a 1967 sedan deville?
The window relay on a 1967 Deville is located behind the drivers side door panel. You will have to remove the door panel to expose the relay system.
What is the purpose of relay for life?
The purpose of relay for life is to raise money for cancer and find a cure for it.
Where is the relay switch for the cooling fan on a Renault clio 1998?
The cooling fan relay switch can be found on the inside front quarter panel. The relay switch will be on the drivers side quarter panel.
