NewMar PM-24-80 Installation And Operation Manual Download Page 8

P.O. Box 1306, Newport Beach, California 92663  •  Phone: 714-751-0488  •  Fax: 714-957-1621  •  E-Mail: [email protected]

www.newmartelecom.com

8

P.O. Box 1306, Newport Beach, California 92663  •  Phone: 714-751-0488  •  Fax: 714-957-1621  •  E-Mail: [email protected]

www.newmartelecom.com

the fan air flow is toward the rear of the PM (arrow on body of fan 

pointing to the rear)

7. Connect the replacement fan’s connector to the mating 

connector on the main circuit board and re-attach the fan 

mounting plate to the long air baffle plate.

8. Replace the PM’s top cover, reconnect ac power and verify 

replacement fan operates.

D) Indicators and Alarms

“On” Indicator light-Indicates ac input breaker is in the On position 

and that ac input voltage is present.

System Status LED, Audible alarms and form C alarm contact - 

See chart on page 7.

E) Remote Alarm

Form C alarm contacts are provided for AC input and DC 

output fail.

A color-coded wire “pigtail” with keyed plug is provided for wiring 

convenience and to assure proper connections. The plug holds six 

wires: three for the DC output and three for the AC fail relays.

The alarm may be wired with the relay “normally open” or 

“normally closed”, as needed. The position of the contacts during 

failure and normal operating condition is illustrated below:

V) OPTIONS  (Available from factory)

A) Temperature Compensation Option

Because low battery temperature increases resistance to charging 

and high battery temperature reduces impedance, requiring a 

lower charge voltage, the ideal charging voltage will vary 

depending on the temperature of the battery’s environment when it 

is being charged. The remote sensor will signal the PM to fine tune 

its output voltage so that it is properly matched to the temperature 

of the battery/battery environment. Specify Model “TP” when 

ordering.

The PM will compensate PM output voltage up or down from 

the factory default of 27.2 v (24 v model) or 54.4 v (48 v model) 

at 30ºC by -120mV per ºC (48 v model) or -60 mV per ºC (24 v 

model). If the battery r50ºC the PM will turn itself off. The 

PM will automatically restart once the battery temperature drops 

approximately 5-10ºC.

Temperature Probe (model TP) Installation

1. Disconnect ac input power and dc output connections to the 

PM. If a battery string is connected it is recommended that it be 

disconnected (via battery disconnect switch or remove the HOT 

lead from the battery).

2. Remove TP access plate (4 screws). Thread TP sensor end through 

belly-button grommet.

3. Plug the TP connector into the mating 5 pin connector on the 

small circuit board directly inside access hole. Replace access 

panel (4 screws). The connector is keyed and will fit in one 

direction only.

4. The cylindrical probe sensor end can be placed between battery 

cases or attached to the top of one of the batteries using some RTV 

silicone. 

B) D.C. Quick Connect Wiring Kit

Note: This option is available only for systems which incorporate the 

NEWMAR Power Function Manager Model PFM-400. For complete 

information on this product, please contact the factory.

A d.c. wiring harness quick connect kit model CCK-4 is available 

from NEWMAR which simplifies parallel wiring installation of 

multiple Power Modules with the Power Function Manager and 

facilitates “hot change-out” of modules for repair or replacement.

The kit consists of two wiring harness; one for positive and negative 

d.c. output wiring, another for alarm contact wiring. Wires are pre-

cut to proper length, all necessary connectors are installed and the 

bundles are neatly tie-wrapped into proper position for a simple 

and professional installation.

VI) SPECIFICATIONS

Input: 207-253 VAC, single phase 50/60 Hz.

Power Factor: 0.7

Line/Load Regulation: 1% at 10% to 100% load

Ripple P-P: 1%  (Typically)

Efficiency: 80-85% @ full load

Output Voltage Adjustment Range: ± 5% @ 50% load

Temperature Rating:  -20ºC to 50ºC

 

 

       

Altitude Operational Rating: Full output to 5,000 feet; reduce output 

current 4% per 1,000 feet above 5,000 feet; 10,000 feet maximum

NEWPORT BEACH, CA. USA

CONTACTS

STATUS

C

OK

OUTPUT

FAIL

DC

C

OK

FAIL

INPUT

AC

GND

TEMPERATURE

PROBE

48 VOLTS

MAX OUTPUT CURRENT:

INPUT VOLTAGE:  230 V 

@  22 A, 50 - 60 Hz 

OUTPUT VOLTAGE:

50 AMPS

FIGURE 8:  “FAIL” and  “OK” Relay Contact Positions

Summary of Contents for PM-24-80

Page 1: ...D EMI COMPATIBILITY 3 B EMI Electro magnetic Interference 3 C Other Factors 3 III INSTALLATION 4 A Materials Provided 4 B Mounting 4 C AC Input Wiring 4 D DC Output Wiring 4 E Parallel Wiring 5 F Chas...

Page 2: ...and rear panel features of the Power Modules are illustrated below along with the page number where information on each particular feature is located FAX 714 957 1621 TEL 714 751 0488 techservice new...

Page 3: ...an range from 1 to 100 times the normal AC voltage level and can last for a fraction of a cycle to a few cycles Transient disturbances can be placed into two categories Lightning generated Equipment g...

Page 4: ...PM Bracket attachment holes in the PM chassis are provided to allow for 6 forward mounting only C A C Input Wiring Input Voltage the PM is designed to accept 207 253 VAC 50 60 HZ single phase input F...

Page 5: ...tage If adjustment is necessary use a small at tip screwdriver to turn the OUTPUT VOLTAGE ADJUST potentiometer on the front panel until the voltmeter reads the desired system output voltage 4 Shut off...

Page 6: ...ber e g PM 48 50 is rated at 50 amps continuous duty To prevent overload when recharging severely discharged batteries current is limited at approximately 105 of the continuous duty rating by a curren...

Page 7: ...he rear panel which secure the top cover Remove the two screws on the sides near front which secure top cover 3 Locate the two fans located on one end of the main circuit board near the rear of the PM...

Page 8: ...C 48 v model or 60 mV per C 24 v model If the battery reaches 50 C the PM will turn itself off The PM will automatically restart once the battery temperature drops approximately 5 10 C Temperature Pr...

Page 9: ...er con rm AC input or is not receiving correct input voltage voltage Check input connections 2 PM limiting its output due to overload 2 Reduce DC load and or determine or ambient over temperature cond...

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