ViaLite ViaLiteHD User manual

ViaLiteHD
Summary alarm module
User Guide
HRC-2-HB-5
CR4645 10/12/2020
Pulse Power & Measurement Ltd, 65 Shrivenham Hundred Business Park, Watchfield, Swindon, Wiltshire SN68TY, UK
Tel [phone] Fax [phone] Email [e-mail] Web www.vialite.com

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Instrument Care and Safety Information
Please read the whole of this section before using your ViaLiteHD product. It contains important safety
information and will enable you to get the most out of your Fibre Optic Link.
Electrical Safety
The ViaLiteHD rack chassis is a Safety Class 1 product (having metal chassis directly connected to earth via the
power supply cable).
When operating the equipment note the following precautions:
Hazardous voltages exist within the equipment. There are no user serviceable parts inside; the covers should
only be removed by a qualified technician.
There are no user replaceable fuses in the rack chassis mounted equipment. Replacement should only be
carried out by a PPM technician.
The rack chassis earth stud SHOULD be connected to the safety earth.
When using a 2 pin power supply cable the rack chassis earth stud MUST be connected to the safety earth.
The ViaLiteHD Power Supply Modules do not have an isolating switch on the mains voltage inlet. For this
reason, the ViaLiteHD Rack Chassis must be installed within easy reach of a clearly labelled dual pole mains
isolation switch, which supplies the equipment.
ESD Precautions The ViaLiteHD RF Fibre Optic Link is equipped with high frequency active electronics, without the correct handing they
will be susceptible to damage.
Precautions for handling electro-static sensitive devices should be observed when handling all ViaLiteHD modules.
Technicians should ensure that they use effective personal grounding (i.e. ESD wrist strap etc.) when servicing the
equipment. Any equipment or tools used should be grounded to prevent static charge build-up. Good practice should
be observed at all times for reference see relevant standards.
EN 61340-5-1, “Protection of Electronic Devices from Electrostatic Phenomena – General Requirements”
Optical Safety The ViaLiteHD RF Fibre Optic Transmitters, Dual Transmitters and Transceivers contain optical sources (usually
laser diodes) operating at nominal wavelengths of 1270nm to 1610nm.
These devices are rated as EN60825-1 as CLASS 1 radiation emitting devices. A class 1 laser is safe under all
conditions of normal use.
When operating the equipment note the following precautions:
Never look into the end of an optical fibre directly or by reflection either with the naked eye or through an optical
instrument.
Never leave equipment with radiating bare fibres –always cap the connectors.
Do not remove equipment external covers when operating.
Hot surface The ViaLiteHD Summary alarm module may have hot surfaces when operating under fulll load. The hot surfaces are
not accessible when fitted in an approved rack chassis installation.
Suitable precaution should be taken when handling this device.
Allow to cool for 10 minutes
Do not touch metallic surfaces or printed circuit board when hot.
When handling, hold front panel and handle only.

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TABLE OF CONTENTS
1INTRODUCTION.................................................................................................................................................................................4
Internal architecture 4
Typical deployment 5
ViaLiteHD and ViaLite Classic compatibility 5
2SUMMARY ALARM MODULE, PHYSICAL INTERFACES..................................................................................................................6
Module operation, 7HP standard plug-in module 6
Front panel 7
2.2.1 Front panel, visual indicators 7
2.2.2 Front panel, reset switch 7
2.2.3 Front panel, buzzer 7
2.2.4 Front panel, acknowledge switch 7
Front panel, acknowledge switch, slot alarm active, with I2C response, fail module..........................7
Front panel, acknowledge switch, slot alarm active, with no I2C response, removed module............7
Front panel, acknowledge switch, slot alarm inactive, with I2C response, replaced module..............8
Front panel, acknowledge switch, slot alarm inactive, with no I2C response, fail module..................8
Rear panel 8
2.3.1 Rear panel, module rear connections 8
2.3.2 Rear panel, backplane relay connection 8
User configuration DIP switches 8
2.4.1 User configuration DIP switches, alarm masking SW2 and SW3 9
2.4.2 User configuration DIP switches, load resistors SW5 10
3SETTING UP THE SUMMARY ALARM MODULE ............................................................................................................................11
Default configuration 11
Setting the Alarm masking, manual mode 11
Setting the Alarm masking, automatic mode 11
Setting the load DIP switches 11
Connecting to the rear relay connections 11
4SYSTEM INTEGRATION..................................................................................................................................................................12
Initial set up equipment 12
Site requirements 12
5MECHANICAL DIMENSIONS...........................................................................................................................................................13
6PART NUMBERING..........................................................................................................................................................................14
7TECHNICAL SPECIFICATIONS .......................................................................................................................................................15
8MAINTENANCE AND FAULT-FINDING GUIDE................................................................................................................................16
9GLOSSARY......................................................................................................................................................................................17
10 PRODUCT WARRANTY...................................................................................................................................................................18
11 FCC APPROVAL ..............................................................................................................................................................................19

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1 Introduction
The ViaLiteHD Summary alarm module is used to monitor ViaLiteHD equipment fitted in the same rack. It is able to report alarms by front
panel visual indication, audio alarm and by status of it’s on board relays. There are two form C relays, both accessible at the rear of the
module; one relay is also routed to the cabinet backplane.
The summary alarm module maybe configured, so that it’s on board processor automatically senses and alarm only active module; or it may
be configured via manual DIP switches both monitoring and controlling modules
The module has an on board resistive load, this can be configured via DIP switches to ensure the power supplies meet their minimum load
requirement. See your ViaLiteHD Rack Handbook for more details.
Internal architecture
Key features are:
The CPU monitors all rack alarm outputs
Compatible with either 1U or 3U rack
The CPU controls all module outputs
The module fits in ViaLiteHD rack chassis 7HP slot,
oIn a 1U HRK1 rack it fits in slot 3
oIn a 3U HRK3 rack it fits in slot 14
DIP switches available for manual alarm screening, slots 1-13 and slots 15,16
I2C bus is used at start up to monitor active slots for automatic alarm masking
Two dry contact relays, both accessible on module rear connector, one wired in parallel to the rack chassis connector
Front panel LED indication of rack summary status.
Front panel buzzer, giving audio alarm when fault is active
Front panel ACKNOWLEDGE switch
Different indication for active ALARM and acknowledged ALARM
The DC input power feed (+12 volts) is protected by a set resetable fuse.
The internal 5V is generated by linear regulator
PSU
DIP
switch
bank
CPU
Load
4 * 3W
Mute
switch
Buzzer
LEDs I2C
Relay1
Relay2
Alarm
inputs
NO
COM
NC
NO
COM
NC
NO
COM
NC
MS_X
I2C
15 Alarm_X
13
Backplane
Module rear
Backplane
Front panel

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Typical deployment
The Summary alarm module is typically deployed as part of a 3U rack chassis based equipment solution. It can however be fitted in a range
of other equipment.
When fitted in an HRK3 rack chassis it must be fitted in slot 14, this is the only slot to have communication with all other slots.
ViaLiteHD and ViaLite Classic compatibility
The ViaLiteHD summary alarm module will not control or monitor ViaLite Classic equipment.
Its dry contact relay circuits will be compatible with circuits used on previous ViaLite Classic equipment.

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2 Summary alarm module, physical interfaces
This section describes the connections between your ViaLiteHD modules and the Summary alarm module. There is no need to install any
interface cables between summary alarm module and connected modules, as these are all connected via the rack chassis backplane.
Please read fully all relevant documents for information on installing your ViaLiteHD equipment before commissioning your system.
Module operation, 7HP standard plug-in module
All ViaLiteHD plug-in modules are hot-swappable, so it is not necessary to power-down the rack chassis before inserting a module. All
electrical connectors are retained by the module. So it is necessary to either disconnect any cables or have a sufficiently long service loop.
To install a 7HP Standard module
Push the release button of the module handle down and simultaneously pull the top of the handle forwards.
Align the module upright and perpendicular to the front face of the rack chassis so that the PCB slides into the “crow’s feet” card guides
top and bottom.
Gently push the module down its guide, applying pressure via the handle, you may also apply pressure between the LED and buzzer.
As the module is fully mated the top of the handle should snap back and lock in position.
The pawls of the handle should be fully engaged in the matching slots.
If power is applied to the rack chassis the module power LED should light as soon as the module is fully inserted
Connect any interface cables
To remove a 7HP Standard module
Disconnect any cables if necessary
Push the release button of the module handle down and simultaneously pull the top of the handle forwards.
Apply pressure via the handle and gently withdraw the module from the rack chassis.

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Front panel
2.2.1 Front panel, visual indicators
The summary alarm plug-in module has three front panel LEDs for indication of the state of the module. The following table shows the
operation of the front panel LEDs which are dependent on module type.
Colour
Status
LED1
GREEN
Normal
No light
No power
LED2
GREEN
LOAD ON (Any load resistor active)
No light
LOAD OFF
LED3
GREEN
Normal
Solid RED
ALARM, acknowledged
Flashing RED
ALARM, active
2.2.2 Front panel, reset switch
The hard reset switch is accessible via a small hole behind the handle. Under all normal operating circumstances it should not be required.
Actuating the hard reset will cause the module to reboot, the rack inventory table will be deleted.
2.2.3 Front panel, buzzer
The summary alarm plug-in module has a front panel mounted buzzer for indication of the modules
state. The following table shows the operation of the buzzer.
Buzzer
Status
OFF
No ALARM or ALARM acknowledged
ON
ALARM active
The buzzer operates with a nominal frequency of 2.4kHz, the tone is modulated.
2.2.4 Front panel, acknowledge switch
The ACKNOWLEDGE switch is housed on the front panel, this is used to acknowledge alarms. It works in a number of different modes after
the alarm is generated depending on the status of the slot module when the acknowledge switch is hit.
After the ACKNOWLEDGE switch is pressed the summary alarm card will continue to monitor for further alarms.
Front panel, acknowledge switch, slot alarm active, with I2C response, fail module
In this state the summary alarm module assumes that a faulty module is fitted in the slot. After pressing the ACKNOWLEDGE switch the
BUZZER is MUTED and the STATUS LED is in ALARM acknowledged state (see section 2.2.1). The status of the relays remains
unchanged.
Front panel, acknowledge switch, slot alarm active, with no I2C response, removed module
In this state the summary alarm module assumes that a faulty module has been removed. After pressing the ACKNOWLEDGE switch the
BUZZER is OFF and the STATUS LED is in normal state (see section 2.2.1). The relay will be in its normal state.
LED1
LED2
LED3
Buzzer
Reset
Switch
Acknowledge
Switch

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Front panel, acknowledge switch, slot alarm inactive, with I2C response, replaced module
In this state the summary alarm module assumes that a faulty module has been replaced. After pressing the ACKNOWLEDGE switch the
BUZZER is OFF and the STATUS LED is in normal state (see section 2.2.1). The relay will be in its normal state.
Front panel, acknowledge switch, slot alarm inactive, with no I2C response, fail module
In this state the summary alarm module assumes that a faulty module is fitted in the slot. After pressing the ACKNOWLEDGE switch the
BUZZER is MUTED and the STATUS LED is in ALARM acknowledged state (see section 2.2.1). The status of the relays remains
unchanged.
Rear panel
2.3.1 Rear panel, module rear connections
The rear panel provides interconnections for two dry contact relays. These can be accessed via the
connector J2. Both relays are triggered by the same condition signal, but they are electrically isolated. All the
pins are volt free.
The module has a 6-pin connector; this is available at the rear of the module.
The three connections for each relay are
NO - Normally open
COM - Common
NC - Normally closed
Connections from Relay 1 are also connected in parallel to the rack chassis backplane.
The rear panel provides interconnections for two dry contact relays. The many be accessed via a six way
screwless connector, it is suitable for use with 14 –22 AWG wire
J2
Name
ALARM = OFF
ALARM = ON (or POWER=OFF)
Pin 1
NO_1
Relay 1
NO1 is open circuit
NC1 is shorted to COM1
Relay 1
NC1 is open circuit
NO1 is shorted to COM1
Pin 2
COM_1
Pin 3
NC_1
Pin 4
NO_2
Relay 2
NO2 is open circuit
NC2 is shorted to COM2
Relay 2
NC2 is open circuit
NO2 is shorted to COM2
Pin 5
COM_2
Pin 6
NC_2
2.3.2 Rear panel, backplane relay connection
Relay 1 is connected in parallel to the backplane, making it available on the rack chassis connector. See your rack chassis handbook.
User configuration DIP switches
The summary alarm card is fitted with DIP switch allow you to configure the module. It has two eight way DIP switches (SW2 and SW3), that
configures the alarm operation and one four way DIP switch (SW5) that configures the load.
NO2 COM2 NC2
NO1 COM1 NC1
CONTROLCONTROL
ALARM=OFF
NO2 COM2 NC2
NO1 COM1 NC1
CONTROLCONTROL
ALARM=ON

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2.4.1 User configuration DIP switches, alarm masking SW2 and SW3
Eight way DIP switches SW2 and SW3 configure the alarm operation.
SW3
Name (1U rack)
Name (3U rack)
OFF
ON
Position 1
Man /Auto
Man /Auto
Automatic masking
Manual masking
Position 2
PSU front
Slot 15 (PS 1)
Slot 15 alarms masked
Normal operation
Position 3
PSU rear
Slot 16 (PS 2)
Slot 16 alarms masked
Normal operation
Position 4
Slot 1
Slot 1
Slot 1 alarms masked
Normal operation
Position 5
Slot 2
Slot 2
Slot 2 alarms masked
Normal operation
Position 6
Unused (SET OFF)
Slot 3
Slot 3 alarms masked
Normal operation
Position 7
Unused (SET OFF)
Slot 4
Slot 4 alarms masked
Normal operation
Position 8
Unused (SET OFF)
Slot 5
Slot 5 alarms masked
Normal operation
SW2
Name (1U rack)
Name (3U rack)
OFF
NO
Position 1
Unused (SET OFF)
Slot 6
Slot 6 alarms masked
Normal operation
Position 2
Unused (SET OFF)
Slot 7
Slot 7 alarms masked
Normal operation
Position 3
Unused (SET OFF)
Slot 8
Slot 8 alarms masked
Normal operation
Position 4
Unused (SET OFF)
Slot 9
Slot 9 alarms masked
Normal operation
Position 5
Unused (SET OFF)
Slot 10
Slot 10 alarms masked
Normal operation
Position 6
Unused (SET OFF)
Slot 11
Slot 11 alarms masked
Normal operation
Position 7
Unused (SET OFF)
Slot 12
Slot 12 alarms masked
Normal operation
Position 8
Unused (SET OFF)
Slot 13
Slot 13 alarms masked
Normal operation
When in automatic mode, manual alarm masking DIP switches (SW2 positions 1-8, SW3 positions 2-8) are ignored.
When operating in automatic mode the module executes the following procedure to determine which slots to mask, typically these will be
empty slots. It is important when powering up a
1. After power is applied the module waits for all other cards to boot

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2. It then sequentially poles the I2C bus of each slot to determine if that slot is occupied
oIf that slot responds to the I2C, the inventory for that slot has the module type added, the alarm for this slot is active
oIf that slot does not respond, the inventory for that slot is marked as empty, the alarm for this slot is masked (inactive)
3. Unintelligent module slots don’t have I2C bus connections they have their alarm status checked to determine presence.
oIf that slot has a okay status, the alarm for this slot is active
oIf that slot has an active alarm, the alarm for this slot is masked (inactive)
NOTE: Unintelligent slots default to alarm active when unfitted
4. Only active alarms are reported
After power up the module will also run periodic inventory updates to check if new modules are added
2.4.2 User configuration DIP switches, load resistors SW5
This function is provided to ensure that when redundant power supplies are used, there is enough current for both power supplies to be
active. The module can provide a maximum load of 12 watts load, this load can be switched in 3 watt steps
Load 0 / 3 / 6 / 9/ 12 watts switched
Control via switch selection, using four DIP switches, see section 2.4
Setting* (3U rack only) 1 or 2 modules fitted all four switches ON
(3U rack only) 3 or 4 modules fitted three switches ON
(3U rack only) 5 or 6 modules fitted two switches ON
(3U rack only) 7 or 8 modules fitted one switch ON
(3U rack only) 9 or more modules fitted, set all to OFF
(1U rack only) set all switches OFF
* These calculations assume the lowest possible power consumption to meet the minimum load specification, a more accurate calculation
can be made by using the modules datasheets or handbooks.
Note: There is no minimum load requirement for a 1U rack, in this case all load resistors should be OFF
SW5
Name
OFF
ON
Position 1
Load 1
Load resistor OFF
Load resistor ON
Position 2
Load 2
Load resistor OFF
Load resistor ON
Position 3
Load 3
Load resistor OFF
Load resistor ON
Position 4
Load 4
Load resistor OFF
Load resistor ON
The ViaLiteHD Summary alarm module module may have hot surfaces when operating under full load. Suitable precaution should be taken
when handling this device, see safety instructions