2
95-8562
4.2
APPLICATIONS
The PM-5MPX is intended for fast detection of
hydrocarbon fueled fires in harsh chemical environments.
The detector is ideal for semiconductor wet benches and
is suitable for clean-rooms, gas cabinets, and other
indoor applications.
DETECTOR USE IN HAZARDOUS AREAS
The PM-5MPX is FM Approved to FM 3260: 2000,
intrinsically safe for use in Class I, II, III, Division 1,
Groups C, D, E, F & G hazardous (classified) locations;
non-incendive for use in Class I, Division 2 Groups A, B,
C & D locations and suitable for use in Class II/III Division
2, Groups F & G. This Approval depends on proper
installation and choice of components, which are
described in this installation manual. See the following
sections and Control Drawing Configuration (Appendix B)
for installation instructions and component selection
criteria.
ELECTRICAL CHARACTERISTICS
The PM-5MPX is designed to interface to any NFPA type
fire alarm control panel. A normally open solid-state relay
is provided for an alarm signal. The relay closes for a
minimum of five and a maximum of 15 seconds when a
fire is detected and is automatically reset after a fire. An
internal supervision solid-state relay closes when the
detector powers up and opens if a detector fault (such as
loss of power or low power supply voltage) occurs. In
NFPA 72, Class A or B circuits (see Appendix C, D and
E), such a fault condition is indicated at the control panel
as a trouble signal. A blinking red LED on the front of the
housing indicates the following:
1 Hz rate =
Normal operation
3-4 Hz rate = Alarm condition.
OPERATING VOLTAGE—
9 to 30 Vdc at the detector (observe polarity), including
line drops and ripple.
NOTE
Detector output is not guaranteed below 9 Vdc.
The status LED and relay will reflect this condition.
POWER CONSUMPTION—
10 milliamps maximum at +30 Vdc.
ALARM OUTPUT—
Solid-state alarm relay is non-latching. Contacts close for
5 to 15 seconds.
TROUBLE OUTPUT—
Opening of normally closed solid-state relay.
SOLID-STATE RELAY RATINGS—
100 mA at 30 Vdc; 30 ohms.
STABILIZATION TIME—
Maximum 0.5 second after power up.
RESPONSE TIME—
1 second maximum.
WIRING HARNESS—
Identification:
See Table 1.
Length:
50 feet (15.24 m).
Diameter:
0.3 inches (7.62 mm).
Individual Wires: 20 AWG, stranded.
2.5
3.1
1.7
3.1
2.5
4 x 0.203
Figure 1—Dimensions of PM-5MPX in Inches
