Datasheet
Monitoring Module with 5 x Inputs for Active (0-10V DC) or Digital Inputs
MON / DIN / 6R / [Option]
Main Features Monitors 5 external Volt-Free Contacts or 0-10Vdc 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

Summary Features

General

The module provides the follow capabilities

Monitor up to five inputs, 0-10v DC or digital status (no Thermistor inputs)

Up to 10 Network Intelligent Sensors or Zone controllers can be registered to this module. Module will derive Max, Min and Average for both Temperature and Humidity and generate alarm conditions

Visual indication of fault condition

Provides alarm or status information

Logging of 0-10V DC channels (max 3)

Variable delays or hysteresis can be applied to alarm conditions

Relay outputs for alarm annunciation/indication

Common alarm output (latching/non latching operation)

Alarm repeater function for remote recreation of Common Alarm signal (using Actuator Submodule)

Description of Features

Registration

The module can be used in standalone operation, but if part of a system must be registered with the appropriate system housekeeper. Up to 4 Actuator Submodules for remote recreation of common alarm signal can be registered to monitor module.

Additionally 10 remote measurement devices can be registered to the module - Network Sensors (Temperature only [including Outside type] or Temperature+Humidity) or Zone Controllers (version 4b2 onwards).

Input Channel Set-up

The analogue input channels can be configured via a Zone controller or Doorway, the procedure is the same for both, using Config parameters 1-13 to set the channels behavior (the config table is shown here for clarity).

Example

(please read - it will save you some time when setting up using a Zone Controller)

To configure the channel to read 0-10v directly set decimal places to 2, and CTOP to 10. To simplify the setting of the range and alarm levels from a zone controller a new feature has been introduced, with the decimal places set to 2, when setting the CTOP figure the knob will move the displayed figure in increments of 0.01. To avoid the need of moving the knob the 1000 clicks to set 10.00, use the following method:- Set the displayed figure to 0.01 now press the 'Override' button on the zone, the zone will now display 0.10 , with each press of the 'override' button the display figure will be multiplied by a factor of 10.

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.

Alarms

Alarm levels

High and low alarm levels per channel can be specified by the user.

Alarm On

In addition to specifying the alarm levels, the module can be configured to only alarm on certain conditions i.e. low, high or both.

Delays

The module generates an alarm condition when any of its inputs are not in the desired state, or exceed the allowed levels. To prevent spurious alarms, delays are applied to each input, such that the input must remain in the alarm state for the delay period before the alarm is acted on. The default delay period is 2 minutes, individual delays can be applied to the high and low alarm levels of each input.

In addition parameter DLYO is common to all inputs and determines how the delay is applied. The default setting is 0, alarm conditions must exist for the delay period before being reported but clear alarms report immediately. Setting 1 allows the delay to be applied to both the alarm and clear condition, and 2 reports the alarm immediately, but must remain in the healthy state for the delay period before clearing.

Digital only

In the case of digital inputs only the high delay and enable is used. In this mode all other channel parameters are pre-set and cannot be adjusted by the user.

Hysteresis

If any delay is set to 0 then Hysteresis is applied at that alarm level to give an operational deadband, this is calculated as 5% of the span between the limits (or 1% of span which ever is the greater), applied as - 5% at the upper level and +5% at the lower level. i.e. High level = 30, Low level = 10 Hence the span 30 - 10 = 20 therefore 5% of 20 = 1 Giving a high level alarm at 30°C and clearing at 29°C.If the span is wide and you wish to have a tighter alarm band around one of the alarms only then set the other alarm level to the same value, this will force the alarm to operate at the reduced span of 1% . It is permissible to use a delay on one limit and hysteresis on the other.

Other Parameters

All stop condition ASAC - this parameter determines how the module should react to a system 'all stop' alarm.

Generation of System STOP alarm GNAS - this parameter determines if this monitor board should generate System STOP alarms. The STOP alarm when enabled is generated by any recognised alarm condition on any channel analogue or digital. (The simple rule here is if the channel alarm relay is energized a STOP alarm would have been generated if enabled). 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 Codes

Alarm status codes represent the following conditions.

Note the Alarm times and clear times, are for future use and are not currently updated. Remember Doorway time and date stamps all the alarms on receipt.

Alarm Priority - after checking the inputs the module applies the following priority order to any conditions found:- digital alarm, high alarm, low alarm, faulty sensor alarm, clear digital alarm, clear high alarm, clear low alarm, clear fault alarm; this ensures that faults are always reported in preference to clear alarms. Alarm reporting is rationalised so that a faulty device will report faulty, not high or low first assuming it was not already out of the specified levels. If a number of inputs are in alarm and then come back within limits they will raise clear alarms, however the last input to clear will cause the module to raise a NOAL' indicating that all points are now within operating limits.

Network sensor fault alarms - these are assigned the lowest priority and sent after all other alarms have been sent. The reporting of remote sensor alarms can be disabled with the RSAM parameter.

Common Alarm Channel/Relay Outputs and Latching Mode

The common alarm is eabled by setting the common alarm enable config parameter CALM to 'ON'. This then makes the common alarm output enabled when any input is in alarm. In this mode the output relays can be set to latch (see latching modes) 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. The common alarm output is NOT enabled when alarms are generated from networked sensor values.

Plotting channels

The plotting channels are automatically allocated to non-digital channels, during the module set-up phase, but can be reallocated using the appropriate Config Variables. This controller has Configurable Plots like most of the other SeaChange controllers. These plots are now automatically re-scaled within the controller to achieve the best resolution for the data recorded. This happens at the end of every 96 readings when new maximum and minimum settings are calculated and also if a new value is outside the current range settings.

Remote alarm signaling

Up to 4 Actuator Submodules for remote recreation of common alarm signal can be registered to monitor module. A typical application would be to have a sounder in the plant room driven from the Common Alarm output on the Monitoring Module and a remote alarm in the security lodge driven from an Actuator Submodule registered to the Monitoring Module.

Network Sensor Values

The module can support up to 10 remote measuring devices that are registered to it. From these sensors the following values are derived;-

Average - updated when a new value is received from any remote device. A value from remote devices will only be included if the device is functional. (A regular check is made that the device is still present, if a known device go's missing then a device failure alarm will be generated)
Maximum - the current highest measured value
Minimum - the current lowest measured value

By default the average values are displayed on Sensor 6 (Temperature) and Sensor 7(Humidity). However, by changing the 'MAMX' parameter these can display the Minimum, Maximum or the Average. Alarms can then be applied to these values; delay and hysteresis as per other alarms.

Individual channel values can be read on configs C170 onwards. It is recommended that Zone values are obtained directly from the Zone controllers. Notice that the Zone controllers are added to the end of the list separate from the other sensor readings. Configs C190 onwards allow the user to see which zone controllers are registered to the module, and the reference they are allocated. (This is done because zone addresses are allocated by the system master, whereas the intelligent sensors registered to the module are given addresses in the module's local address space, this means that it is possible for the zone to be allocated a different reference after an automatic rebuild if the monitor device is ever replaced. However, the checking is still performed on the validity of the value and that the zone is still functional).

Status lamp

The lamp condition indicates the following;

'slow flashing green' - configuration mode selected

'fast flashing green' - manual mode selected

'steady green' - module is healthy

'steady red' - module has a fault

Error lamp

The lamp condition indicates the following;

'green' - no alarm conditions, normal state

'alternating red/green' - input in high alarm, within hysteresis band or delay active

'alternating yellow green' - input in low alarm, within hysteresis band or delay active

'alternating green red' - inputs in high and low alarm, within hysteresis band or delay active

Options and Product Codes

Monitoring Module

MON / DIN / 6R / [Option]

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