Feature Notes	Datasheet
Monitoring Module with 5 x Temperature or Digital Inputs
MON / DIN / 6R / ...
Main Features Monitors 5 external Volt-Free Contacts or Thermistor Temperature signals Generates Alarms for reporting at Doorway Supervisor 5 On-board relays for local alarm annunciation Relay Output for driving external Common Alarm lamp or annunciator Input for Common Alarm mute button Direct Control of Output Relays via Comms Monitoring of Hours Run Control Options for Interlocking with Alarm conditions Other Monitoring Modules may be registered as sub Modules

Summary Features

General

The Monitoring Module monitors up to 5 signals; these can be Volt-Free Contacts (VFC) for digital (On/Off) status indication, or Thermistor sensors for monitoring temperatures. Any combination of digital or thermistor inputs can be used; the unit automatically detects which type of input is connected during commissioning. The first 4 temperature channels have Data Logging which can be shown as graphs on Doorway.

The Monitoring Module may be used purely as a monitoring device, with the information being displayed at a Doorway Supervisor (or a Zone Controller), or it can be set to generate alarms.

Alarms - Digital

For a digital alarm, the Module can generate an alarm on change in state; the “healthy” state (i.e. VFC contact open or closed) of the input is detected automatically.

Alarms - Temperature

For a temperature alarm, the Module can generate High Temperature, Low Temperature, and Sensor Failure alarms. The alarms can be individually enabled.

Alarm Delays and Hysteresis

Delays can be set individually on all alarm inputs, to prevent the generation of spurious alarms. Delays can be used to delay the generation of an alarm, the generation of a “clear” alarm, or both, depending on the application.

Alternatively, if a time delay is not used on a Thermistor input, Hysteresis will be used; this feature gives an operational “deadband”. For instance,if the temperature rises above the High Alarm limit, it needs to fall to a degree or two below the Alarm limit before the alarm clears; the Hysteresis band is set automatically.

Alarm outputs and Common Alarm

The Monitoring Module may be used as an Alarm Annunciator; each of the 5 channels has an output relay which may be used to drive an external lamp or buzzer. A 6th relay is provided to indicate a Commom Alarm; it will be energised whenever a channel goes into alarm.

If the Common Alarm feature is enabled, all relay outputs become “latching”, which means that once energised, they will stay “latched” on until reset by pressing an external mute button or via a Doorway Supervisor.

If the Common Alarm feature is disabled, each channel’s relay will de-energise as its alarm clears.

Description of Features

Monitoring

The Monitoring Module can be used to monitor up to 5 signals; these can be Volt-Free Contacts (VFC) for digital (On/Off) status indication, or Thermistor sensors for monitoring temperatures. Any combination of digital or thermistor inputs can be used; the unit automatically detects which sort of input is connected during commissioning (see Setting up Input Channels, below). If temperatures are being monitored, the first 4 channels which are set up for thermistor inputs (it can be any of the 4 channels) have 24 hour graphs available; the graphing capability is set up automatically to record the 4 lowest channel numbers that have been set to monitor thermistors.

The monitored data may be displayed at a Doorway Supervisor using the codes listed in Configuration and Monitoring Parameters, or at a Zone Controller using the User Parameters feature.

Setting up Input Channels

The Monitoring Module can automatically detect whether Digital (On/Off) or Thermistor (Temperature) devices have been connected to its inputs. During the automatic set-up procedure, the input channels will be configured to accept the appropriate type of signal (Digital or Thermistor) and also settings will be made for alarms; the “healthy” state of each digital channel will be recorded, default values for thermistor high alarms will be set. Finally, the 4 channels with the lowest channel numbers which have thermistor inputs will have 24 hour graphs associated with them.

Setting-up the Module can be done using pushbuttons only, or via Configuration Parameters using a Doorway Supervisor or a Zone Controller.

Initial Set-up using pushbuttons

If the Module has not previously been configured, its Status Lamp will be off; if the lamp is on, then it has been configured already, and you should see Subsequent changes or additions to inputs, below.

Firstly connect all of the inputs to the Module. It is important that all Digital channels (if they are to be used to generate alarms) are in a “healthy” condition (i.e. if the monitored device produces a contact closure on alarm, then the contact should be “open” during set-up). If the external plant is producing alarm signals during set-up, it should be disconnected and temporarily replaced by a shorting link (or open circuit, as appropriate). The value of temperature readings are not crucial, provided that they are connected; the value will be used to set a default setting for the High Alarm (which will be current value + 20%) but this may be adjusted later.

Hold down the Select button until the Error Indicator flashes, then release it. After a short delay, the common Alarm output (output f) will energise; this indicates that the module has completed its auto detection of the input channels. Any channels which have been detected as digital inputs will have their outputs energised.

Next, hold down the Select button again; the Error Lamp will stop flashing, and the Common alarm will de-energise; the set-up process is now complete.

Subsequent changes or additions to inputs using pushbuttons

If changes occur to the site which necessitate adding more monitored sensors or volt-free contacts to the inputs of the modules, or adjusting the order of the channels already connected, the Set-up procedure may be repeated.

The procedure is similar to that described in Initial Set-up, above, however in order to prevent the module being set-up inadvertantly, it is deliberately more difficult to enter Set-up Mode after the initial set-up has occurred.

Press the Select button (the Error Lamp will start to flash); keep it pressed down for approximately 30 seconds, until the Common Alarm output pulses “on” momentarily. This indicates that Set-up Mode has been entered; you can now follow the procedure described in Initial Set-up.

Set-up using Doorway or a Zone Controller

The Module may be Set-up by using Configuration Parameters instead of the pushbutton method described above. These Parameters may be accessed using a Doorway Supervisor or a Zone Controller (see Accessing Configuration and Monitoring Parameters, below).

Adjusting the Parameter RCFG from 0 to 1 will cause the Module to enter Set-up mode, automatically configure all of its inputs, and return to normal operation. After this (which takes around 5 seconds) the RCFG Parameter will be automatically reset to zero.

It is sometimes useful, when adding monitoring channels to a live system, to be able to run the Set-up procedure on one channel at a time, without disturbing the existing channels. If it is desired to Set-up a single channel only, then the Parameter CINP may be adjusted (before running the Set-up procedure) to select the desired channel number (select 1 for channel a, 2 for channel b etc). If CINP is set to zero, all channels will be set up

Alarms

The Monitoring Module may be set to generate Alarms from its input channels; the channels may be set individually to produce several different kinds of Alarm. Alarms may be sent to a Doorway supervisor or another Alarm device on the network, and/or may be locally annunciated using the on-board relays.

Alarms - Digital

For a digital channel, the Module can generate an alarm on change of state; the “healthy” state (i.e. VFC contact open or closed for no-alarmed state) of the input is detected automatically (see Setting up Input Channels). The status of each input channel (i.e. contact open or closed) can be read on parameters IN A, IN B etc. and the Alarm state of each channel appears on ALMA, ALMB etc.

Alarms from each channel may be disabled, or set to generate a Digital Alarm by selecting a channel CHNL then adjusting parameter XAON (zero disables the Alarm, a setting of 3 enables it).

Alarms - Temperature

For a temperature channel, the Module can generate High Temperature, Low Temperature, or Sensor Failure alarms (Sensor Failure is when a channel set to Thermistor sensing has an open or short circuit at its input terminals).

The default setting of High and Low Temperature Alarm limits is done automatically during the Set-up procedure; Low Alarm limits are set to 10 degC, and High Alarm limits are set to (Current Reading + 20%). These defaults may be adjusted selecting a channel CHNL then adjusting parameters XLOW for Low Alarms, and XHGH for High Alarms.

Alarms from each channel can be disabled, or set to produce High only, Low only, or both, Sensor Fail alarms will be generated in all 3 cases. The parameter XAON may be set to different values to select the 3 different Alarm actions, or disable the Alarm.

Alarm Delays and Hysteresis

Delays can be set individually on all alarm inputs, to prevent the generation of spurious alarms. Delays can be used to delay the generation of an alarm, the generation of a “clear” alarm, or both, depending on the application. The parameter DLYO may be set to apply the delay to Alarm set, Alarm clear or both types of alarm on all channels.

The parameters XHDY set the delay time (in minutes) for the generation of a Digital Alarm (for Digital channels) or a High Temperature Alarm. Parameters XLDY set the delay time for the generation of a Low Temperature Alarm.

Alternatively, if a time delay is not used on a Thermistor input (i.e. if the delay parameter is set to zero), Hysteresis will be used; this feature gives an operational “deadband”. For instance,if the temperature rises above the High Alarm limit, it needs to fall to a degree or two below the Alarm limit before the alarm clears. The Hysteresis band is set automatically, and is equal to 10% of the span between High and Low Alarm limits, or 0.5 degC, whichever is the greater.

Alarms - Stop Alarm

The Monitoring Module may be set to respond to a System Stop Alarm generated by another Module (e.g. a Boiler Controller).This may be useful in order to prevent the generation of nuisance consequential alarms e.g. a Boiler failure may result in the Monitoring Module generating a series of Low Temperature Alarms, which have little value and it would be better if these were suppressed. Using parameter ASAC the Monitoring Module may be set to inhibit all Alarm generation on the receipt of a Stop Alarm, or just allow local annunciation via the relays, or to ignore the Stop Alarm and function normally.

Generation of System 'STOP' Alarm

The GNAS parameter determines if the monitoring module should generate System STOP alarms. If GNAS=1 a STOP alarm is generated by any alarm condition on the first input channel only. If GNAS=2 any recognised alarm condition on any channel, analogue or digital generates a STOP alarm. Setting GNAS=0 disables the generation of STOP alarms from the Monitoring Module. Note - if a System STOP alarm is received by the monitor module, it will NOT generate further System STOP alarms while another STOP alarm is still current.

Alarm outputs and Common Alarm

The Monitoring Module may be used as an Alarm Annunciator; each of the 5 channels (a-e) has an output relay which may be used to drive an external lamp or buzzer. A 6th relay (channel f) is provided to indicate a Common Alarm; it will be energised whenever a channel (a-e) goes into alarm.

If the Common Alarm feature is enabled (using Parameter CALM ), all relay outputs become “latching”, that means that once energised, they will stay “latched” on until reset by pressing an external mute button (hardwired to the 6th input) or via a Doorway Supervisor using parameter RCLR.

If the Common Alarm feature is disabled, each channel’s relay will de-energise as its alarm clears.

Alarms - Text Strings

When reported at the Doorway Supervisor, Alarms will be shown as a 4-character Mnemonic code which records which type of Alarm has been received. the codes are as follows:

Common Alarm Channel/Relay Outputs and Latching Mode

The common alarm output is active if ('CALM' = 1) and is enabled when any input is in alarm. In this mode the output relays can be set to (see latching modes) latch so the user can see visually which input is out of limits via the lamps. To reset the outputs, input 6 is shorted or 'RCLR' is set.

Override mode

To simplify testing or witnessing after set-up placing the module in the override condition will cause all alarm delays to be ignored. Overide is obtained by press and holding down of the overide button for about 6 seconds

Additionaly when direct control of relay outputs is enabled (see below), after entering into overide, by pressing the overide button again (quick press) output a is turned on. Succesive presses of the overide button select through each output until output e is turned on. One last press will release the unit from overide into normal operation.

Direct control of relay outputs

Setting configuration C110 "RMIO",causes the output relays 'a' to 'e' to no longer be used for alarm signaling instead they are enabled via configuration parameters, the common alarm relay continues to function as normal. The relays are enabled via configuration parameters C111 - C115, relays 'a' to 'e' respectively, all other alarm functionality is unchanged.

Monitoring of Hours Run

This feature applies to version 3b2 or above.

The outputs when being driven by configuration parameters (see "RMIO" above) have individual hours on counters also accessible via configuration parameters. The hours run totals are on configuration parameters C141-C145 "HRSA-HRSE" and have a maximum count of 9999 hours. The hours are saved in non-volitile memory once a day, so if power is removed part way through a day, the accumulated hours for that part day will be lost. The hours run total will not accumulate if "RMIO" is set to zero.

The configuration parameter C140 "HRST" is used to reset these hours run totals to zero. Writing zero to "HRST" will clear all of the totals, writing 1 to "HRST" will clear output A's individual hour total . Reset values of "HRST" of 2 to 5 reset individual output hour totals B to E respectively

Please Note - The run hours is updated daily to permanent storage with the amount of hours run totals for the previous 24 hrs. The daily totals are not permanent in storage and will be lost if power is removed from the unit. The total as seen in "HRSA - HRSE" is the addition of the permanent total run hours and the current day hours.

The configuration parameter C146 "HSAV" is used to force a store of the current day run hour totals to the permanent total run hours. Set "HSAV" to one to perform this function. This is useful if it is known before hand that power is to be removed from the module.

Helpful Hint: To make these configuration variables more accessible in Insite, create a new custom list starting at C140 through to C146. Save this list and then place into favorites. This will place these labels as a quick button within Insite for ease of access.

Interlocked Control of Relays

This feature applies to Monitoring Modules version 4a1 or above.

The state of the output relays can be set as a function of the remotely commanded state (configs 111 - 115) and the current alarm conditions. This allows a range of control possibilities. The control action to be performed can be selected channel by channel using parmameter RTYP Remote control Type. A timer can also be used , set in hours with a resolution of 0.1 hour. The following table defines the options available, note that the timer function will be included if the RTIM setting is not zero.

Registration

Registration is the simple process by which logical connections are made between Controllers in a SeaChange system; it is done during commissioning and involves pressing buttons on the Controllers in a specific sequence.

The Monitoring Module must be registered in order to receive its System Address; this is done by briefly pressing its Register button; the Status Lamp should flash to indicate the address that has been allocated.

For further details of the registration process, see our ‘Commissioning Guide’ publication.

Accessing Configuration and Monitoring Parameters

Generally, Configuration Parameters are used to adjust settings from their factory defaults; Monitoring Parameters are used to monitor internal readings (such as temperature readings) during the Commissioning process.

The Parameters may be viewed, and in the case of Configuration Parameters, adjusted by one of two methods; either by using a Zone Controller connected to the network, or by using the SeaChange Doorway Supervisor.

Using the Zone Controller:

a) The Zone Controller must be connected to the network and registered (see Commissioning Guide for further details).
b) Put the Zone Controller into Configuration Mode by depressing Select and Override buttons for 10 seconds, until the CNFG legend appears on the display.
c) Press Select button momentarily on the target device (in this case, the selected Monitoring Module).
d) Hold down Select button on the Zone Controller, and rotate the rotary knob:
clockwise to view Monitoring Parameters
anticlock to view Configuration Parameters
e) When desired Configuration Parameter appears, release Select, hold down Override and turn knob to adjust the parameter (some Monitoring Parameters cannot be adjusted).

Using SeaChange Doorway:

Data Points may be added to a Doorway page to access/adjust any Configuration or Monitoring Parameter. Graphs of 4 of the Inputs (if set to thermistor) are also available. The code used to access a Monitoring Module is Mn, where n is the address of the Monitoring Module. The code for each parameter is shown in the adjacent tables.

Further details of how to set up Doorway pages may be found in the SeaChange Doorway Manual, or in the online help facility supplied with SeaChange Doorway.

The PC running SeaChange Doorway can be connected locally via a Serial Adaptor Module, or remotely using standard High-Speed Modems.In this manner all parameters can be monitored and adjusted remotely.

Options and Product Codes

Monitoring Module

MON / DIN / 6R / [option]

Input options

SC Controls Ltd

PO Box313
Wadhurst
East Sussex
TN5 6JL

phone 08707 606040
fax 08707 606041
e-mail seachange@sccontrols.co.uk
http:// www.seachange.co.uk