PolyGard SPC-1110 User Manual
PolyGard SPC-1110
Carbon monoxide (CO) gas detection and control system
serial no. SPC-1110-0 00 0
User Manual
April 01, 2004
PolyGard is a registered trademark of MSR SPC1110I01
Phone (858) 578-7887 & (888) GO INTEC Fax (858) 578-4633 & (888) FX INTEC Specification subject to change without notice.
INTEC Controls, Inc., P.O. Box 12506, La Jolla, CA 92039 www.inteccontrols.com Printed in USA 040401
User Manual - PolyGard® CO SPC-1110
Carbon monoxide (CO) gas detection and control system
Page 2
1 General Overview
2 Description
3 Installation
3.1 Mounting locations.................................................................................................................. 5
3.2 Enclosure ............................................................................................................................... 5
............................................................................................................................... 3
................................................................................................................................5
4 Electrical Connection
4.1 Instructions............................................................................................................................. 6
4.2 Wiring connection................................................................................................................... 7
5 Start-up Operation
5.1 Set trip/setpoints..................................................................................................................... 8
5.1.1 Set low and high trip/setpoints without optional digital display ............................................. 8
5.1.2 Control trip/setpoint voltage calculation............................................................................... 9
5.1.3 Set low and high trip/setpoints with optional digital display .................................................. 9
5.2 Select switching differential of the trip/setpoints...................................................................... 9
5.3 Calibration.............................................................................................................................. 9
5.3.1 Control span voltage calculation ....................................................................................... 10
5.4 Calibration of digital display range (optional display)............................................................. 10
5.5 Motherboard jumper selection table ...................................................................................... 11
5.6 Displayboard jumper selection table ..................................................................................... 11
.................................................................................................................. 3
.......................................................................................................... 6
................................................................................................................ 8
6 Inspection and Service
6.1 Inspection............................................................................................................................. 12
6.2 Calibration sensor................................................................................................................. 12
6.3 Replacing sensor element .................................................................................................... 12
7 Troubleshooting
7.1 Diagnostics........................................................................................................................... 13
................................................................................................................... 13
..................................................................................................... 12
8 Cross-sensitivity Data...................................................................................
9 Specifications
10 Wiring Configuration and Enclosure Dimensions
11 Notes and General Information
11.1 Intended product application ............................................................................................. 22
11.2 Installers’ responsibilities................................................................................................... 22
11.3 Maintenance ..................................................................................................................... 22
11.4 Limited warranty ............................................................................................................... 22
11.5 Return instructions ............................................................................................................ 22
........................................................................................................................ 15
............................................ 17
.................................................................................. 22
14
PolyGard is a registered trademark of MSR SPC1110I01
Phone (858) 578-7887 & (888) GO INTEC Fax (858) 578-4633 & (888) FX INTEC Specification subject to change without notice.
INTEC Controls, Inc., P.O. Box 12506, La Jolla, CA 92039 www.inteccontrols.com Printed in USA 040401
User Manual - PolyGard® CO SPC-1110
Page 3
Carbon monoxide (CO) gas detection and control system
1 General Overview
The PolyGard
CO analog single point controller is used for detection of carbon monoxide in the ambient air to
warn of the presence of carbon monoxide gas and to control ventilation systems.
2 Description
Gas sensing
The sensor portion of the PolyGard CO analog single point controller is a micro-fuel cell, which is completely
sealed. The measurement is a gas-in-liquid chemical reaction rather than a surface area measurement. With no
surface area to coat, this sensor retains its sensitivity to carbon monoxide even after prolonged exposure to clean
air.
The cell consists of a diffusion barrier, O-ring seal, electrolyte reservoir and three electrodes: sensing, counter and
reference. The target gas, carbon monoxide, enters the cell through a diffusion barrier. The chemical process of
the measurement is one of oxidation where one molecule of the target gas is exchanged for one molecule of
oxygen. The reaction drives the oxygen molecule to the counter electrode, generating a DC microampere signal
between the sensing and counter electrodes. This signal is linear to the volume concentration of the sensed gas
rather than the partial pressure.
The integrated two-wire transformer converts this DC microampere signal to a standard 4-20 mA signal. In some
cases, biasing is required to maintain a voltage differential between the reference and sensing electrode in order
to facilitate the necessary reaction in the cell.
The transmitter electronics will provide the necessary bias voltage when configured for one of these sensor types.
Most sensors produce a small amount of baseline current in clean air. This is adjusted out with the zero
potentiometer on the transmitter.
This oxidation at the electrodes causes wear of the sensor. Typical life for this sensor is approximately five years in
normal operation. This will vary somewhat from sensor to sensor, with some working lifetimes less than five years
and some greater than 5 years. This wear also changes the characteristics of the sensor, requiring periodic recalibration. It is recommended that the sensor accuracy be verified every six months and recalibrated as
necessary
.
Relay output
The controller output provides two (2) adjustable trip/setpoints within the sensing range. If the CO concentration
exceeds any trip/setpoint value the respective alarms will be activated. The low or high alarm trip/setpoint level
correspond to the relay outputs 1K1 (R1) and 1K2 (R2). The output relay R3 can be assigned to either low alarm
or high alarm.
The controller has a self-diagnostic to detect any power supply voltage or sensor failures. When a failure occurs it
triggers relay output R4. The fail-safe relay R4 will close in case of loss of supply voltage or sensor failure.
Analog output
The 1-5 VDC output is linear and represents the range of 0-250 ppm actual sensor proportional value. This signal
can be used with any external DDC/PLC control or automation system.
Test button
With this button pushed, it simulates the maximum gas concentration. Low and high alarms will be activated and
the display will show the maximum value.
PolyGard is a registered trademark of MSR SPC1110I01
Phone (858) 578-7887 & (888) GO INTEC Fax (858) 578-4633 & (888) FX INTEC Specification subject to change without notice.
INTEC Controls, Inc., P.O. Box 12506, La Jolla, CA 92039 www.inteccontrols.com Printed in USA 040401
User Manual - PolyGard® CO SPC-1110
Page 4
Manual override of low alarm relay
Manual switch for “Auto” or “On” function of the relay 1K1 (R1)
Switch position:
Auto = alarm relay 1K1 normal operation
On = alarm relay 1K1 manually on
Caution!
Replacement sensor elements, which are not bias types, are shipped with a tiny spring of wire shorting the sensor
and reference electrodes.
This spring MUST BE REMOVED prior to installing the element into the sensor assembly.
Optional Display
3.5 digits display of concentration
LED power: green Power on, and normal operation
red Failure operation
LED alarm: orange Low alarm level active
red Low and high alarm level active
nd
Button “Reset 2
Alarm” Reset high alarm, when relay is set to latched
Button “Reset Audible” Reset internal horn and relay R3 for remote alarm
Optional time delay relay for low alarm
Time delay relay for delayed activation of relay 1K1
RTE-P11 analog timer = on-delay, adjustable from 0.1 min to 10 min
PolyGard is a registered trademark of MSR SPC1110I01
Phone (858) 578-7887 & (888) GO INTEC Fax (858) 578-4633 & (888) FX INTEC Specification subject to change without notice.
INTEC Controls, Inc., P.O. Box 12506, La Jolla, CA 92039 www.inteccontrols.com Printed in USA 040401
User Manual - PolyGard® CO SPC-1110
3 Installation
Note:
Avoid any force (e.g. by thumb) during operation or installation on the sensor element. This could destroy
•
the element.
Electronics can be destroyed through static electricity. Therefore, do not work on the equipment without a
•
wrist strap connected to earth ground or standing on conductive floor.
3.1 Mounting locations
The specific weight of carbon monoxide is almost the same as that of air (factor 0.967).
•
Location of the SPC 1110 must conform to the layout of the area being monitored.
•
Disregard the ventilation ratio! Do not mount SPC 1110 in the center of the airflow. In larger rooms, it
•
might be necessary to install two or more SPC 1110 where there is not adequate air movement. Do not
mount in corners or directly in front of air inlets (e.g. doors, windows, open ramps, dampers, etc.). In
areas with undefined air movement, it might be necessary to distribute several SPC 1110 in a vertical and
horizontal direction over the whole area to be monitored.
Avoid locations where water, oil etc. may influence proper operation and where mechanical damage
•
might be possible.
Mounting height is 5 feet to max. 6 feet (1.5 to 1.8 m) above floor.
•
Provide adequate space around SPC 1110 for maintenance and calibration work.
•
Page 5
3.2 Enclosure
The door of the enclosure is lockable with supplied key (5/16 in. (8 mm) triangle key).
•
Use the provided template for locating position of wall mounting holes.
•
Screw the enclosure vertically on wall. (see Fig. 2, page 18).
•
When wiring is completed, put back the wire track cover and close the door of the enclosure. (see Fig. 1,
•
page 17).
PolyGard is a registered trademark of MSR SPC1110I01
Phone (858) 578-7887 & (888) GO INTEC Fax (858) 578-4633 & (888) FX INTEC Specification subject to change without notice.
INTEC Controls, Inc., P.O. Box 12506, La Jolla, CA 92039 www.inteccontrols.com Printed in USA 040401
User Manual - PolyGard® CO SPC-1110
Page 6
4 Electrical Connection
4.1 Instructions
Note:
Electrostatic discharge (ESD) may damage electronic components. During wiring, open the cover only when
completely grounded via grounding strap or standing on conductive floor.
Connections should be made without any power applied to conductors.
•
Installation of the electrical wiring should be according to the connection diagram and only performed by a
•
trained specialist.
For the 1-5 VDC analog output signal use shielded cable to avoid any influence from external interference.
•
Recommended cable: 18 AWG shielded, maximum resistance 20.8 Ω/1000 ft (73 Ω/1000 m)
•
Cable for power and relay outputs do not need to be shielded.
•
Power terminal block X1
Connector H 120 VAC 50/60Hz (24V AC/DC without transformer)
Connector N 0 VAC/DC
Connector G Earth ground
Motherboard terminal strip X2
Connector 1 1-5 VDC sensor output signal (common)*
Connector 2 1-5 VDC sensor output signal (positive)
Connector 3 Power supply 24 VAC
Connector 4 0 VAC/DC
Connector 5 Power supply 24 VDC (19 - 28 VDC)
Connector
* Note:
When the SPC analog output signal is conntected to an external controller, the controller’s analog input must
provide isolation for the 1-5 VDC signal. If the 1-5 VDC signal is used, then remove Jumper JP1 located on the
motherboard.
Motherboard terminal strip X3 (relay output without optional time delay relay 1K1):
Connector 1-2 R1, low alarm relay activates the 1K1 relay via internal wiring
Connector 3
Connector 4
Connector 5
Connector 6-7 R3, potential free contact for remote alarming
Connector 8-9 R4, potential free contact for remote fail-safe alarming
Low alarm relay socket 1K1 (DPDT)
Contact set 1 of DPDT Contact set 2 of DPDT
Connector 5
Connector 1
Connector 9
PolyGard is a registered trademark of MSR SPC1110I01
Phone (858) 578-7887 & (888) GO INTEC Fax (858) 578-4633 & (888) FX INTEC Specification subject to change without notice.
INTEC Controls, Inc., P.O. Box 12506, La Jolla, CA 92039 www.inteccontrols.com Printed in USA 040401
NO
NC
R2, high alarm relay activates the 1K2 relay via internal wiring
COM
Connector 8
Connector 4
Connector 12
NO
NC
COM
User Manual - PolyGard® CO SPC-1110
High alarm relay socket 1K2 (DPDT)
Contact set 1 of DPDT Contact set 2 of DPDT
Connector 5
Connector 1
Connector 9
Optional low alarm time delay relay socket 1K1 (DPDT)
Contact set 1 of DPDT Contact set 2 of DPDT
Connector 6
Connector 5
Connector 8
4.2 Wiring connection
Static electricity (see section 4.1).
Open the door of the enclosure.
•
Pull cables via the conduit openings into the enclosure, and connect cable leads to the appropriate
•
terminal connectors.
Connector 8
Connector 4
Connector 12
Connector 3
Connector 4
Connector 1
NO
NC
COM
NO
NC
COM
Page 7
PolyGard is a registered trademark of MSR SPC1110I01
Phone (858) 578-7887 & (888) GO INTEC Fax (858) 578-4633 & (888) FX INTEC Specification subject to change without notice.
INTEC Controls, Inc., P.O. Box 12506, La Jolla, CA 92039 www.inteccontrols.com Printed in USA 040401
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