GDS C1 User manual

P/N 1200-0620-46
GDS Corporation
1245 Butler Road League City, Texas 77573
[phone] [phone] (Fax) www.gdscorp.com
INSTRUCTION MANUAL
MODEL C1 PROTECTOR 8/16 CHANNEL CONTROLLER
(Revision 4.6 – Firmware 6.03 & later, including Wireless Setup)
Warning:
Read & understand contents of this manual prior to operation. Failure to do so
could result in serious injury or death.

P/N 1200-0620-46
GDS Corporation
1245 Butler Road League City, Texas 77573
[phone] [phone] (Fax) www.gdscorp.com
SECTION 1...........................................................................................................1
IMPORTANT SAFETY ISSUES .......................................................................................1
1.0 GENERAL DESCRIPTION..................................................................................2
1.1 DATA DISPLAY SCREENS...............................................................................2
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 ................................................................................................................... 4
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....................................................................................... 11
2.2.5 LINEARIZATION MENU.............................................................................................. 12
2.2.6 CONFIGURE MENU ................................................................................................... 12
2.2.6a EUNITS / MEASUREMENT NAME ASCII DATA FIELDS.......................................... 13
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.............................................................................. 15
2.3.2 10-0195 DISCRETE RELAY “FAILSAFE” MODE....................................................... 16
2.3.3 COMMON HORN RELAY & LOCAL PIEZO............................................................... 17
2.3.4 COMM PORT MENUS................................................................................................ 18
2.3.4a MASTER PORT RADIO SETUP MENU ..................................................................... 18
2.3.5 EIGHT / SIXTEEN CHANNEL MODES....................................................................... 19
2.3.6 SENSOR INFORMATION........................................................................................... 19
2.4 AUTHORIZATION MODE .................................................................................20
2.5 LCD CONTRAST ADJUSTMENT.....................................................................20

SECTION 3.........................................................................................................21
3.0 MAIN I/O INTERFACE PCB # 10-0142............................................................21
3.1 INPUT / OUTPUT OPTIONAL PCB’s ..............................................................22
3.1.1 OPTIONAL ANALOG INPUT PCB # 10-0158............................................................. 22
3.1.2 OPTIONAL DISCRETE RELAY PCB # 10-0195 ........................................................ 24
3.1.3 OPTIONAL *BRIDGE SENSOR INPUT BOARD #10-0191........................................ 25
3.1.4 CATALYTIC BEAD SENSOR INITIAL SETUP ........................................................... 26
3.1.5 OPTIONAL RTD / 4-20mA ANALOG INPUT BOARD # 10-0170............................... 27
3.1.6 OPTIONAL 4-20mA ANALOG OUTPUT BOARD #10-0167....................................... 29
3.1.7 OPTIONAL CLOCK / PRINTER INTERFACE BOARD # 10-0229 ............................. 30
3.1.7a CLOCK / PRINTER SYSTEM SET-UP MENU............................................................ 31
3.1.8 OPTIONAL 24VDC 150 WATT POWER SUPPLY ..................................................... 32
SECTION 4.........................................................................................................32
4.0 SYSTEM DIAGNOSTICS ..................................................................................32
SECTION 5.........................................................................................................35
5.0 MODBUS RS-485 PORTS ................................................................................35
5.1 MODBUS SLAVE REGISTER LOCATIONS.....................................................35
SECTION 6.........................................................................................................39
6.1 C1PM PANEL / RACK MOUNT ENCLOSURE.................................................39
6.2 C1N4 NEMA 4X WALL MOUNT FIBERGLASS ENCLOSURE.......................40
6.3 C1SS NEMA 4X WALL MT 316 STAINLESS STEEL ENCLOSURE..............42
6.4 C1XP NEMA 7 EXPLOSION-PROOF WALL MOUNT ENCLOSURE.............42
6.5 C1 MAIN I/O & OPTION PCB FOOTPRINT DIMENSIONS.............................43
SECTION 7.........................................................................................................45
7.0 ADDING THE 10-0288 RADIO MODEM “WIRELESS” OPTION....................45
7.1 10-0288 RADIO SETUP MENU........................................................................45
7.2 WIRELESS RECEIVER MODE........................................................................46
7.2.1 RADIO STATUS ALARMS - WIRELESS RECEIVER MODE..................................... 47
7.3 WIRELESS MODBUS SLAVE MODE..............................................................48
7.4 WIRELESS MODBUS MASTER MODE ..........................................................48
7.5 ANTENNA SELECTION....................................................................................48
7.5.1 DIPOLE AND COLLINEAR ANTENNAS..................................................................... 48
7.5.2 YAGI ANTENNAS ....................................................................................................... 49
7.5.3 MOUNTING NEAR OTHER ANTENNAS.................................................................... 49
7.5.4 COAX CABLES ........................................................................................................... 50
7.6 SURGE PROTECTION & GROUNDING...........................................................50
7.6.1 ANTENNA GROUNDING............................................................................................ 50
Connections to other equipment................................................................................................ 51

C1 Controller Users Manual
Revision 4.6
1
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 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.
Equipment not used as prescribed within this manual may impair overall safety.
!
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.
!

2
1.0 GENERAL DESCRIPTION
The GDS Corp. C1 Sixteen Channel Controller is designed to display and control alarm
event switching for up to sixteen sensor data points. It may also be set as an eight
channel controller for applications needing fewer inputs. Alarm features such as ON and
OFF delays, Alarm Acknowledge, and a dedicated horn relay make the C1 well suited for
many multi-point monitoring applications. Data may be input to the C1 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 C1
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.
In addition to traditional analog and serial methods of providing monitored values, the C1
is also capable of sending and receiving wireless data as described in section 7 of this
manual.
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
C1 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
1.1 DATA DISPLAY SCREENS
The C1 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.

C1 Controller Users Manual
Revision 4.6
3
1.1.1 TREND SCREEN
The C1 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 C1 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 C1 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.

4
1.2 SPECIFICATIONS:
1.2.1 DC POWER SUPPLY REQUIREMENTS
Standard C1 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.
Catalytic Bead Sensor Input option; add 12 watts max (assumes maximum sensor
power consumption).
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.
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 10-0172 150 watt power supply (Figure 3.8) is for powering the C1 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. All relays 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
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).
!

C1 Controller Users Manual
Revision 4.6
5
*NEMA 7 wall mount suitable for DIV 1&2 Groups B,C,D weighing 110 lbs (Figure
6.4).
*Includes non-intrusive magnetic keypad.
1.2.6a NON-INTRUSIVE MAGNETIC KEYPAD
The C1 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 C1 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 C1 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 C1 parameters.