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SafeGuard Controller User Manual

MAN-0115 Rev 0

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SECTION 3

3.0

MAIN I/O INTERFACE PCB

The most basic SafeGuard Controller requires only the I/O PCB shown in Figure 3.1 for
interfacing to field wiring. The SafeGuard Controller’s primary power supply is applied
to terminals 9 & 11 of TB2. This may be from 10 – 30 VDC.

WARNING:

HIGH VOLTAGES SUCH AS 115 VAC APPLIED TO THESE

TERMINALS MAY CAUSE SEVERE DAMAGE!

DC output terminals 10 & 12 on TB2 provide up to 500mA of output power for
powering remote devices such as lamps, transmitters etc.

This PCB includes both

master (COMM 1)

and

slave

(COMM 2)

RS-485 Modbus ports,

5 amp form C relays for each common alarm event (A1, A2, FAULT/A3 & HORN), and
power supply I/O terminals. JP1 allows the RS-485 ports to be configured for 2 or 4 wire
operation. A 26 pin ribbon cable connects the I/O PCB to the SafeGuard Controller’s
CPU and Display nest assembly. Two I

2

C bus connectors allow addition of optional

functions such as analog I/O and discrete alarm relays for each channel.

Horizontal jumpers installed in JP1 connect the RS-485 port’s RX & TX lines,
simplifying 2 wire daisy chains by providing additional terminals for incoming and
outgoing cables. For example, installing the 2 COM 1 jumpers connects screw terminals
1 & 5 and terminals 3 & 7. Socketed RS-485 terminating resistors R6 (COMM 1) and
R12 (COMM 2) are located on the MAIN I/O board. These resistors should be removed
if communication wire lengths are very short (less than 25 feet), or, if the port is not at
the end of the communication line.

An Auxiliary Relays

piggyback

PCB may be added to the I/O PCB via ribbon cable J4.

These add another form C contact set to the common A1, A2 and HORN alarms.
Auxiliary Relay contacts are available at the TB1 (AUX) terminals shown in Figure 3.1.

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Содержание SAFEGUARD CONTROLLER

Страница 1: ...MAN 0115 REV 0 August 13 2009 SAFEGUARD CONTROLLER User Manual Revision 4 4 Firmware 6 03 later...

Страница 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 MEASUREMEN...

Страница 3: ...TICS 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 ENCLOS...

Страница 4: ...NG 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 o...

Страница 5: ...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 I2 C bus Option boards have 8 channels and therefore require...

Страница 6: ...easurement 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 GRAP...

Страница 7: ...oller 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 s...

Страница 8: ...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...

Страница 9: ...AD 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 Na...

Страница 10: ...Rev 0 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...

Страница 11: ...latch NO allows all outputs for this alarm to automatically reset as soon as the alarm condition clears TRIP ON is set to HIGH for increasing alarms or LOW for decreasing alarms to determine if the a...

Страница 12: ...alarm The fault out of range threshold for the channel is the most recent Fault trip point entered prior to changing the menu to Alarm 3 The following example describes how to configure both the Fault...

Страница 13: ...t is not used Figure 2 4 2 2 4a MIN MAX RAW COUNTS MENUS The Min Raw and Max Raw counts entries included in Input Data From menus define the range of input counts that provide Measurement Range read o...

Страница 14: ...feGuard Controller also transmits the same 4mA value Marker Enabled turns the marker feature ON and OFF The negative Marker value is entered into the Marker field as a negative percent of full scale F...

Страница 15: ...0 5 0 0 0 6 0 0 0 7 0 0 0 8 0 0 0 9 0 0 0 A l a r m 1 A l a r m 2 A l a r m 3 Da t a F r o m Ca l i b r a t e L i n e a r i z e C o n f i g u r e Figure 2 6 2 2 6 CONFIGURE MENU From the entry level s...

Страница 16: ...gh resolution at zero unless the detector s output is extremely stable If decimal points are limited to one the 0ppm reading becomes 0 0 and the 100ppm reading remains 100 0 Resolution may be limited...

Страница 17: ...tment is needed Unintentional calibrations are reset by the Unity Gain menu item Unity Gain resets zero offset to 0 and span gain to 1 It is useful for returning the calibration to a known starting pl...

Страница 18: ...Some items needing configuration are not specific to a channel but affect the entire SafeGuard Controller system These are located in the system entry menu shown on the left side of Figure 2 9 System...

Страница 19: ...16 trip relays on an optional discrete relay PCB configured for Alarm 1 see section 3 1 2 Failsafe controls relay activation for this common relay Failsafe ON causes the relay to de energize during a...

Страница 20: ...Setup menu shown in Figure 2 11 Entering YES causes these discrete relays to have energized coils when no alarm condition exists for the associated channel and de energized coils when the alarm occurs...

Страница 21: ...tomatically all channels are displayed on the Bar Graphs screen 2 3 4 COMM PORT MENUS The system Comm Port menu allows setting RTU Slave ID address Slave Baud rate Parity and UART Timer for the comm2...

Страница 22: ...channels If more than 8 channels are needed a second I O option PCB may be required Figure 2 14 2 3 6 SENSOR INFORMATION this feature is not used at this time Sensor Info is available when at least o...

Страница 23: ...it code However if lost it may be displayed briefly at power up using the following procedure Remove power from the SafeGuard Controller Reapply power and as the alarm LED s begin scrolling down hold...

Страница 24: ...6 pin ribbon cable connects the I O PCB to the SafeGuard Controller s CPU and Display nest assembly Two I2 C bus connectors allow addition of optional functions such as analog I O and discrete alarm r...

Страница 25: ...IP Switch settings See MAN 0082 1 Refer to MAN 0082 prior to setup Select the desired address for the device Example DIP Switch 1 positions 1 2 3 4 ON This corresponds to a Modbus Address of 1 Refer t...

Страница 26: ...afeGuard Master Comm 1 terminal 3 or Master Comm 1 terminal 7 on SafeGuard Note that the SafeGuard s Master Comm1 terminals are the top terminals 1 3 5 7 See Figure 3 1 6 Jumper the transmitter s COM...

Страница 27: ...el s IN LO and IN HI terminals are socketed termination resistors for 4 20mA inputs These may be removed if voltage inputs are to be applied EXC and IN LO terminals are bussed together internally EXC...

Страница 28: ...ter EXC LO HI Pwr Sig Com Typical 2 3 wire 4 20mA transmitter wiring connect correct power 24VDC or other to TB2 CH 1 8 CH 1 8 Figure 3 3 3 1 2 OPTIONAL DISCRETE RELAY PCB SG10 0195 An optional Discre...

Страница 29: ...JP4 allows zoning of adjacent channel alarms All zoning jumpers are placed vertically Dwg exhibits channels 1 4 and channels 5 7 creating 2 zones All relays in a zone switch together Unused jumpers ma...

Страница 30: ...es the outputs for channels groups 1 8 or 9 16 Also see 2 2 4b Marker Menu to configure the SafeGuard Controller for current output for a fault condition of a detector or transmitter and gas sensor co...

Страница 31: ...transmitters providing inputs to the SafeGuard Controller A 150 watt AC DC power supply may be included for these applications 115VAC or 230 VAC selected via slide switch When ordered from the factor...

Страница 32: ...al ports and analog I O It is exited manually by pressing NEXT and automatically if no keys are pressed for 5 minutes It is very important to understand that CHANNEL INPUT DATA IS NOT PROCESSED DURING...

Страница 33: ...30 SafeGuard Controller User Manual MAN 0115 Rev 0 Figure 4 2 Note The Printer Option is not used at this time...

Страница 34: ...40488 3 n a 2 characters per register Channel Tag 12 40489 40496 3 n a 2 characters per register Channel Tag 13 40497 40504 3 n a 2 characters per register Channel Tag 14 40505 40512 3 n a 2 characte...

Страница 35: ...11 40607 40609 3 n a 2 characters per register 3 registers per channel ASCII Value 12 40610 40612 3 n a 2 characters per register 3 registers per channel ASCII Value 13 40613 40615 3 n a 2 characters...

Страница 36: ...tatus 1 16 31033 n a 4 n a packed 16bit integer Alarm 2 Status 1 16 31034 n a 4 n a packed 16bit integer Alarm 3 Status 1 16 31035 n a 4 n a packed 16bit integer Relay Status n a 31036 n a 4 n a packe...

Страница 37: ...2001 16 n a 2 n a discrete may be packed Type Channel First Last Read FC Write FC Notes Chnl Alarm 2 1 16 12017 32 n a 2 n a discrete may be packed Type Channel First Last Read FC Write FC Notes Chnl...

Страница 38: ...pdate command from the Modbus master Type Channel First Last Read FC Write FC Notes Update MIN n a 2065 n a n a 5 Moves 24 hour MIN data trend to trend data base Update AVG n a 2066 n a n a 5 Moves 24...

Страница 39: ...discrete relays may be mounted directly to the back of the enclosure Refer to section 3 for information on each option PCB Additional 8 channel I O option PCB s must be located external from the asse...

Страница 40: ...on each option PCB The enclosure may be mounted outdoors with a weather deflector shield It weighs approximately 17 pounds Figure 6 3 provides important warning information concerning correct groundi...

Страница 41: ...38 SafeGuard Controller User Manual MAN 0115 Rev 0 Figure 6 3...

Страница 42: ...ounting of additional option PCB s as described below SafeGuard PM Panel Rack Mount supports 2 option positions as standard and 4 more with the SG10 0180 expansion plate since in panel rack mount inst...

Страница 43: ...termine and correct the problem 3 A company name contact name and telephone number 4 A purchase order from your company authorizing repairs or request for quote 5 Ship all equipment prepaid to Net Saf...

Страница 44: ...rmal for an indefinite period of time followed by a sudden failure To eliminate potential ESD damage review the following guidelines Handle boards by metal shields taking care not to touch electronic...

Страница 45: ...ada T1Y 7J7 1 866 FIREGAS 347 3427 ph 403 219 0688 fx 403 219 0694 http www net safety com Email nsmsales net safety com PRODUCT SERVICES CONTACT INFORMATION Telephone 8am 5pm MDT 403 769 6074 403 717...

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