Net Safety SAFEGUARD CONTROLLER User manual

MAN-0115 REV 0
August 13, 2009
SAFEGUARD CONTROLLER
User Manual
(Revision 4.4 – Firmware 6.03 & later)

TABLE OF CONTENTS
TABLE OF CONTENTS .......................................................................................1
SECTION 1...........................................................................................................1
IMPORTANT SAFETY ISSUES .......................................................................................1
1.0GENERAL DESCRIPTION..................................................................................2
1.1DATA DISPLAY SCREENS...............................................................................3
1.1.1TREND SCREEN.......................................................................................................... 3
1.1.2BAR GRAPHS SCREEN............................................................................................... 3
1.1.3COMBINATION SCREEN............................................................................................. 3
1.2SPECIFICATIONS:..............................................................................................4
1.2.1DC POWER SUPPLY REQUIREMENTS ..................................................................... 4
1.2.1a150 WATT AC – 24VDC POWER SUPPLY.................................................................. 4
1.2.2RELAYS ........................................................................................................................ 4
1.2.3AMBIENT TEMPERATURE RANGE ............................................................................ 4
1.2.4HUMIDITY RANGE ....................................................................................................... 4
1.2.5ALTITUDE..................................................................................................................... 4
1.2.6HOUSINGS ................................................................................................................... 5
1.2.6aNON-INTRUSIVE MAGNETIC KEYPAD ...................................................................... 5
1.2.7APPROVALS................................................................................................................. 5
SECTION 2...........................................................................................................5
2.0BASIC OPERATION ...........................................................................................5
2.1SETUP MENU CONFIGURATION......................................................................6
2.1.1CHANGING MENU VARIABLES USING THE KEYPAD.............................................. 6
2.2CHANNEL CONFIGURATION MENUS..............................................................7
2.2.1CHANNEL SETUP ENTRY MENU ............................................................................... 8
2.2.2ALARM 1 / ALARM 2 / HORN RELAY SET-UP MENU ................................................ 8
2.2.3ALARM 3 / FAULT ALARM MENU................................................................................ 9
2.2.4DATA FROM? MENU TO SET INPUT SOURCE ......................................................... 9
2.2.4aMIN / MAX RAW COUNTS MENUS ........................................................................... 10
2.2.4bMARKER MENUS....................................................................................................... 11
2.2.4cSENSOR LIFE DETECTION (- this feature is not used at this time) .......................... 11
2.2.5LINEARIZATION MENU.............................................................................................. 12
2.2.6CONFIGURE MENU ................................................................................................... 12
2.2.6aEUNITS / MEASUREMENT NAME ASCII DATA FIELDS.......................................... 12
2.2.6bINPUT MEASUREMENT RANGE............................................................................... 13
2.2.6cDECIMAL POINT RESOLUTION................................................................................ 13
2.2.6dTURNING OFF UNUSED CHANNELS....................................................................... 13
2.2.6eCOPY DATA TO?........................................................................................................ 13
2.2.7CAL MODE.................................................................................................................. 14
2.3SYSTEM CONFIGURATION MENUS...............................................................15
2.3.1COMMON ALARM RELAYS 1 & 2.............................................................................. 16
2.3.2SG10-0195 DISCRETE RELAY “FAILSAFE” MODE.................................................. 17
2.3.3COMMON HORN RELAY & LOCAL PIEZO............................................................... 17
2.3.4COMM PORT MENUS................................................................................................ 18
2.3.5EIGHT / SIXTEEN CHANNEL MODES....................................................................... 19
2.3.6SENSOR INFORMATION (this feature is not used at this time)................................. 19
2.4AUTHORIZATION MODE .................................................................................20
2.5LCD CONTRAST ADJUSTMENT.....................................................................20
SECTION 3.........................................................................................................21
3.0MAIN I/O INTERFACE PCB.............................................................................21
Modbus Communication between SafeGuard and Digital Millennium II Series Transmitters... 22
3.1INPUT / OUTPUT OPTIONAL PCB’s ..............................................................24
3.1.1OPTIONAL ANALOG INPUT PCB # SG10-0158 ....................................................... 24
3.1.2OPTIONAL DISCRETE RELAY PCB # SG10-0195 ................................................... 25

MAN-0115 REV 0
August 13, 2009
3.1.6OPTIONAL 4-20mA ANALOG OUTPUT BOARD # SG10-0167 ................................ 27
3.1.8OPTIONAL 24VDC 150 WATT POWER SUPPLY ..................................................... 28
SECTION 4.........................................................................................................29
4.0SYSTEM DIAGNOSTICS ..................................................................................29
SECTION 5.........................................................................................................31
5.0MODBUS RS-485 PORTS ................................................................................31
5.1MODBUS SLAVE REGISTER LOCATIONS.....................................................31
SECTION 6.........................................................................................................36
6.1SAFEGUARD PM PANEL / RACK MOUNT ENCLOSURE..............................36
6.2SAFEGUARD N4 NEMA 4X WALL MOUNT FIBERGLASS ENCLOSURE ....37
6.3SAFEGUARD MAIN I/O & OPTION PCB FOOTPRINT DIMENSIONS............39
SECTION 7 – HOW TO RETURN EQUIPMENT................................................40
APPENDIX .........................................................................................................41
Appendix A: Electrostatic Sensitive Device (ESD)....................................................41

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SafeGuard Controller User Manual
MAN-0115 Rev 0
SECTION 1
IMPORTANT SAFETY ISSUES
The following symbols are used in this manual to alert the user of important instrument
operating issues:
!
WARNINGS:
•Shock Hazard - Disconnect or turn off power before servicing this instrument.
•NEMA 4X wall mount models should be fitted with a locking mechanism after
installation to prevent access to high voltages by unauthorized personnel (see
Figure 6.2).
•Only the combustible monitor portions of this instrument have been assessed by
CSA for C22.2 No. 152 performance requirements.
•This equipment is suitable for use in Class I, Division 2, Groups A, B, C, and D or
non-hazardous locations only.
•WARNING- EXPLOSION HAZARD- SUBSTITUTION OF COMPONENTS
MAY IMPAIR SUITABILITY FOR CLASS I, DIVISION 2.
•WARNING- EXPLOSION HAZARD- DO NOT REPLACE FUSE UNLESS
POWER HAS BEEN SWITCHED OFF OR THE AREA IS KNOWN TO BE
NON-HAZARDOUS.
•WARNING- EXPLOSION HAZARD- DO NOT DISCONNECT
EQUIPMENT UNLESS POWER HAS BEEN SWITCHED OFF OR THE AREA
IS KNOWN TO BE NON-HAZARDOUS.
•Use a properly rated CERTIFIED AC power (mains) cable installed as per local
or national codes
•A Certified AC power (mains) disconnect or circuit breaker should be mounted
near the SafeGuard Controller and installed following applicable local and
national codes. If a switch is used instead of a circuit breaker, a properly rate
CERTIFIED fuse or current limiter is required to installed as per local or national
codes. Markings for positions of the switch or breaker should state (I) for on and
(O) for off.
•Clean only with a damp cloth without solvents.
WARNING: Read & understand contents of this manual prior to operation.
Failure to do so could result in serious injury or death.
This symbol is intended to alert the user to the presence of important
operating and maintenance (servicing) instructions.
This symbol is intended to alert the user to the presence of
dangerous voltage within the instrument enclosure that may be
sufficient magnitude to constitute a risk of electric shock.

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MAN-0115 Rev 0
•Equipment not used as prescribed within this manual may impair overall safety.
1.0 GENERAL DESCRIPTION
The Net Safety Monitoring Inc. SafeGuard 16 channel Controller is designed to display
and control alarm event switching for up to sixteen detectors (Flame detectors or
transmitters with gas sensor) data points. It may also be set as an eight channel
SafeGuard Controller for applications needing fewer inputs. Alarm features such as ON
and OFF delays, Alarm Acknowledge, and a dedicated horn relay make the SafeGuard
Controller well suited for many multi-point monitoring applications. Data may be input
to the SafeGuard Controller by optional analog inputs or the standard Modbus® RTU
master RS-485 port. A Modbus RTU slave RS-485 port is also standard for sending data
to PC’s, PLC’s, DCS’s, or even other SafeGuard Controllers. Options such as analog I/O
and discrete relays for each alarm are easily added to the addressable I2C bus. Option
boards have 8 channels and therefore require 2 boards for 16 channel applications.
Note: LEL Gas sensors are connected to the SafeGuard Controller via Net Safety
Transmitters. They are NOT connected directly to the SafeGuard Controller at this
time. Perform calibrations of the transmitter/sensor head. Calibrations may
however be performed at the SafeGuard if the transmitter/sensor configuration is in
a location not easily accessible. See Cal Mode.
A 240 x 128 pixel graphic LCD readout displays monitored data as bar graphs, trends and
engineering units. System configuration is through user friendly menus and all
configuration data is retained in non-volatile memory during power interruptions. The
SafeGuard Controller’s front panel is shown below in Figure 1.0 displaying the 8 channel
bar graph screen. Additional data screens are shown in Figure 2.0.
Figure1.0
ALARM
RESET

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1.1 DATA DISPLAY SCREENS
The SafeGuard Controller offers 3 distinct graphic displays for depicting the monitored
data. These are Bar Graphs, 24 Hour Trend and Combination. Each is shown in Figure
2.0.
1.1.1 TREND SCREEN
The SafeGuard Controller’s Trend screen shown in Figure 2.0 displays a 24 hour trend of
input data for the channel selected. Horizontal tic marks are each hour and vertical tic
marks are each 10% of full scale. Dashed lines indicate alarm levels. The graphic LCD
is 240 pixels wide so each pixel represents 1/10 hour, or 6 minutes worth of data. The
trend is 100 pixels high so each represents 1% of full scale in amplitude. Since each data
point must be collected for 6 minutes before it may be displayed, it is likely input values
will fluctuate during this interval. Therefore, MAX, MIN and AVERAGE values are
stored in RAM memory for each 6 minute subinterval. To accurately portray the trend, a
vertical line is drawn between MIN & MAX values for each 6 minute subinterval. The
AVERAGE value pixel is then left blank, leaving a gap in the vertical line. This is
demonstrated in the noisy area of the 24 hour trend in Figure 2.0. If the MAX & MIN
values are within 2% of each other there is no need for the vertical line and only the
AVERAGE value pixel is darkened as in the quiet areas.
The top portion of each trend screen indicates channel #, real time reading in engrg. units,
measurement name, range, and MIN, MAX & AVERAGE values for the preceding 24
hour period. The SI field on the top right indicates number of seconds remaining in the
current 6 minute subinterval.
1.1.2 BAR GRAPHS SCREEN
The SafeGuard Controller’s Bar Graphs screen shown in Figure 2.0 allows all active
channels to be viewed simultaneously. Both engineering units values and bar graph
values are indicated in real time. Lines across the bars indicate the alarm trip points
making it easy to identify channels at or near alarm. A feature in the Systems menu tree
allows new alarms to always force the LCD to the bar graphs screen. This is useful for
applications requiring channels with alarms to be displayed.
1.1.3 COMBINATION SCREEN
The SafeGuard Controller’s Combination screen shown in Figure 2.0 offers a view of a
single channel but displays the data as a 30 minute trend, bar graph and large engineering
units. It is also useful for testing inputs for stability since MAX, MIN & AVERAGE
values refresh each time this screen is selected. For example, to test stability over a one
hour period for an input, begin timing as soon as the channel is selected. One hour later
record the MAX, MIN & AVERAGE values. The difference between MAX & MIN
indicates peak to peak excursions over the one hour period and AVERAGE is the average
for the hour. Longer or shorter tests may also be run. The numeric value shown below
the bar-graph indicates number of minutes samples have been taken. After 999 minutes
the AVERAGE buffer overflows and the error message UPDATE appears in the
AVERAGE field. Exiting this screen resets the buffer and clears the error message.

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1.2 SPECIFICATIONS:
1.2.1 DC POWER SUPPLY REQUIREMENTS
Standard SafeGuard Controller power requirements are 10-30VDC @ 3 watts applied to
terminals 9 & 11 of TB2 on the standard I/O PCB (see section 3.0). Optional features
increase power consumption as described below:
•Discrete Relay PCB option; add 2 watts per PCB (assumes all 8 relays are energized).
•Analog Input PCB option; add 1/2 watt.
•4-20mA Output PCB option; add 1 watt.
•TB2 terminals 10 & 12 of the standard I/O PCB provide a maximum of 500mA fused
output power for powering of auxiliary external devices such as relays, lamps or
transmitters. Power consumed from these terminals should be considered when
calculating system power consumption.
When wiring transmitters (detectors) to the SafeGuard Controller refer to 3.1.1
Optional Analog Input PCB # SG10-0158 and Figure 3.3.
1.2.1a 150 WATT AC – 24VDC POWER SUPPLY
*110-120 VAC @3.2A max
*220-240VAC @ 1.6A max
* A slide switch on the front of the power supply selects AC input range.
The SG10-0172 150 watt power supply (Figure 3.6) is for powering the SafeGuard
Controller and up to 16 detectors. A minimum of 5 watts per channel is available for
powering of external transmitters.
1.2.2 RELAYS
Common relays are standard and menus provide voting logic for ALARM 1,
ALARM 2, FAULT and HORN. Discrete relays are optional. Relays are Form
C dry contacts and are rated at 5 Amp for 28 VDC and 250 ~VAC RESISTIVE
loads.
IMPORTANT: Appropriate diode (DC loads) or MOV (AC loads) snubber devices
must be installed with inductive loads to prevent RFI noise spikes. Relay wiring should
be kept separate from low level signal wiring.
1.2.3 AMBIENT TEMPERATURE RANGE
-25 to +50 degrees C
1.2.4 HUMIDITY RANGE
0 to 90% R. H. Non-Condensing.
1.2.5 ALTITUDE
Recommended up to 2000 meters
!

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1.2.6 HOUSINGS
•*General purpose panel mount weighing 7 lbs and including hardware for 19” rack
mounting (Figure 6.1).
•*NEMA 4X wall mount in fiberglass enclosure weighing 17 lbs (Figure 6.2).
1.2.6a NON-INTRUSIVE MAGNETIC KEYPAD
The SafeGuard Controller’s operator interface includes five front panel touch keys. A
magnetic keypad option offers these five keys with adjacent magnetic keys. This option
is included as a standard feature. It is useful in applications where it may be inconvenient
to open the enclosure’s door to access the touch keypad.
1.2.7 APPROVALS
CSA C22.2 No 1010.1 and ISA S82.02; CSA C22.2 No 152 for combustibles; UL 1604 /
C22.2 No 213 (Div 2 Groups A,B,C,D); EN55011 & EN61000 (CE Mark). CSA File # =
219995 and may be seen at: CSA-International.org.
SECTION 2
2.0 BASIC OPERATION
The SafeGuard Controller offers 3 graphic screens for viewing monitored data and a Set-
Up menu screen for operator interface to configuration menus. They are shown below in
Figure 2.0. The Bar Graphs screen allows viewing of all active channels simultaneously.
The Trend screen displays a 24 hour trend one channel at a time. The Combination
screen displays a bar graph, large engineering units and a 30 minute trend one channel at
a time. Input channels may be displayed in sequence with the UP/DOWN keys. The
NEXT key switches between the 3 graphic data screens. When SafeGuard power is
applied, the graphic LCD returns to the screen active when power was last removed.
Setup menus are entered by pressing EDIT from any data screen, and scrolling to the
desired menu using the UP/DOWN keys. Pressing EDIT again enters the selected
menu’s tree of variables. This Setup mode may be exited manually by pressing NEXT,
or automatically when no keys are pressed for 5 minutes. Alarm relays and front panel
alarm LED indicators remain active during the Setup mode. An AUTHORIZE menu
offers a password feature to prevent tampering with the SafeGuard Controller’s
parameters.

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Figure 2.0
2.1 SETUP MENU CONFIGURATION
Variables inside system and channel menu trees allow optimum SafeGuard Controller
configuration for a wide range of demanding multi-point monitoring applications.
Access to menus is via the Setup mode by pressing EDIT and activating the Setup screen
shown in Figure 2.0. Menu trees are provided for each of the 16 channels and another for
system variables. Select the desired menu by scrolling with UP/DOWN and EDIT to
enter the menus.
2.1.1 CHANGING MENU VARIABLES USING THE KEYPAD
Upon entering a menu, a pointer controlled by the UP/DOWN keys indicates the selected
variable. Some are simple YES/NO or ON/OFF entries toggled by pressing the EDIT
key. Others, such as Measurement Name and Eunits fields may have many ASCII
character possibilities. Allowed ASCII characters are as follows:
ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz blank space
!"#$%&`()*+,-./0123456789:;<=>?@. EDIT places a cursor over the item and
UP/DOWN scrolls through each allowed entry. The NEXT key moves the cursor to the
next position within a field. When the field is complete, EDIT clears the cursor and
loads it into non-volatile memory where it is retained indefinitely. With no cursor
present, NEXT closes open menus in reverse order and returns the LCD to the most
recent data display.

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2.2 CHANNEL CONFIGURATION MENUS
Figure 2.1 illustrates the menu tree for configuring Channel variables. These items affect
only the specific channel selected. System specific variables are in the menu tree shown
in section 2.3.
Figure 2.1