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For example, assume there is a U module and a S module at the same location. The total load These outputs may be used to directly control low-powered equipment, or to power larger relays for higher powered equipment. This feature provides an intelligent watch dog for each output, so that a communications failure at a transmitting site causes the output to revert to a known state. See Chapter 4 Configuration for further details. Page Analogue Outputs And The use of shielded wiring inside an enclosure containing a module is also recommended.
To connect an AI on the U to an analogue signal from a PLC or DCS output, check the internal circuit of the output carefully as different devices use different ways to create an analogue signal.
Page 19 Chapter Two Installation the loop can be powered be either the U or the device. Zener protection of analogue outputs provides protection against short periods of over-voltage but longer periods may result in module damage. Page Pulse Input Active pulse signals can be connected directly provided the peak voltage is between 3. Note that the U will ground the negative of the pulse signal.
If the voltages are not compatible, use a solid state relay to isolate the two devices. If this is not suitable, use a solid state relay to isolate the external device. This port is internally shared with the RS - ensure that the RS is disconnected before attempting to use the RS port.
Up to 31 x S modules can be connected to a U module. This number is reduced for S-3 and —4 modules, as these modules use two unit addresses refer to chapter 4 of this manual. Page 25 Chapter Three Operation module will continue to attempt to transmit to the remote module every ten minutes. For critical applications, this status can be configured to be reflected to an output on the module for alert purposes.
Each U unit can be configured to act as a repeater. When configuring an input to be mapped to an output, the communications path to the output unit, including the repeater addresses is specified. Page 27 Chapter Three Operation or "noisy" signals. The input is filtered with a 1 second time constant and a 1 second debounce. The analogue outputs are filtered with a 1 second time constant.
An example explaining the interaction of these figures is shown below. Page 28 This ensures that no pulses are lost due to communications failures.
If the PI is transmitted to a U-C interface module, then the accumulated pulse count is stored in the U-C for interfacing to the host device. High set point and low set point levels are configurable. This set-point status turns ON when the analogue input moves below the low level, and turns OFF when it moves above the high level.
Each U module has a radio path testing feature - refer to section 6. Fail to transmit alarm. It is much easier to find a configuration problem. When the system is configured, record the radio signal strength and background noise level for each radio link. Page Chapter Four Configuration The four different products in the range can be used together in the same system, as well as U-C and -G modules.
Inputs to one product type can be transmitted to outputs of another product type. For example, an analogue input to a may be transmitted to an analogue output of a or Page Easy Configuration Using Default Settings Chapter Four Configuration In addition to these network configurations, operational parameters called User Options may be configured to change the features of the operation.
Easy Configuration Using Default Settings If your application requires only a single pair of modules, communicating via radio or serial link, default settings may satisfy your needs. Module 7 is used as a repeater. EXE The Initial screen will appear. The necessary configuration stages are : " Select the type of module from the list.
The programme will ask you to select the unit address. For U modules, select an address between 1 and For S modules, select an address between 96 and Page 41 Chapter Four Configuration Configuring an individual module Double-click on a unit shown on the left-hand menu. The configuration options for each unit will appear. Page 43 Chapter Four Configuration It is possible to map a digital input analogue output - the output will be maximum value when the input is on and minimum value when the input is off.
It is also possible to map a analogue input to an digital output output will be on when Each remote module has a separate comms fail status - you enter a separate comms fail mapping for different remote addresses. Page 45 Chapter Four Configuration Update Time Configuration Update messages are sent if a change message occurred within the update time period. The update time may be set for each input - both physical and internal inputs. The default period is 10 minutes for all inputs, except for pulse inputs 1 minute.
We recommend that the reset time be a little more than twice the update time. Page 47 Chapter Four Configuration Debounce time operates on the set-point status in the same way as digital inputs. Pulse Output Update Time Configuration pulse output The compile function scans configuration and reports any detected errors. If you are adding additional mappings to a U-C or U-G module, then you need to change the archived configuration files first so you can download the modified configuration details into the U-C or U-G 4.
If you have entered a password, then this password will need to be entered if the configuration is to be changed later. You can view the configuration, but you will not be able to make any changes. As the S modules are connected by RS, the S modules can be separated from the U modules by some distance.
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