8
15272 Newsboy Circle
Huntington Beach
California 92649
Phone: 714-751-0488
Fax: 714-856-9679
E-Mail: [email protected]
PoweringTheNetwork.com
Status Contact Harness Connection
A typical system with three NEWMAR Power Modules is illustrated on the previous page. The provided status contact
harness may also be used with non-NEWMAR equipment, however, it is likely that each connector on the harness
which would normally plug into the power module will require removal and replacement with another suitable for that
particular piece of equipment.
Careful attention to correct wire connections will be required when installing an alternate connector due to the uniform
color of each wire group. Wiring from the alternate equipment contacts to the PFM contacts must be identical: (fail-to-fail,
OK-to-OK) and Common-to-Common. “FAIL” and “OK” contact positions are illustrated on the rear of the unit beneath the
Hot Output terminal. (Or see FIGURE 6, following.)
Alarm Wiring with NEWMAR DST-20A Distribution Panel
NEWMAR's DST-20A is provided with its own four-wire harness for alarm wiring. Plug one end of the harness into the keyed
connector on the rear of the DST which is labeled BREAKER STATUS. Note: The harness is reversible, therefore it does not
matter which end is plugged in. For PFM-500 use, cut off one Molex connector from the
DST-20A harness and parallel the brown and blue wires. Parallel the orange and yellow wires. Select an un-used STATUS
CONTACT Input and connect the parallel brown/blue wires to terminal #1 and the paralleled
orange/yellow wires to terminal #3.
If all STATUS CONTACT positions are occupied (i.e., fi ve or six Power Modules are in the system), and a summary alarm
from the DST is required, this may be accomplished through parallel wiring of the status wires. Please contact the factory
for information on how to perform this modifi cation.
When wired to the PFM in this fashion any tripped breaker within the DST will result in illumination of the ALARM light on
the front of PFM, as well as activation of the PFM summary alarm contacts.
Summary Alarm Wiring
The summary alarm contacts will be in the “FAIL” position under the identical conditions in which the “CHECK SYSTEM”
indicator on the front panel is illuminated. (See Section III - B: Meter & Indicator for a complete description of failure
conditions.)
This alarm may be wired with the relay “normally open” or “normally closed”, as required for the installation. The position
of the contacts during DC output failure and normal operating condition is illustrated below:
FIGURE 6: DC “FAIL” and DC “OK” Summary Alarm Contact Positions (as viewed from rear of chassis)
Note: The three right-hand connector positions are unused in this installation
Relay contact rating for status and summary alarms is 5a @ 30V DC
H) Chassis Grounding
If grounding of the PFM chassis is required for the installation, use the provided 1/4" grounding stud on the rear panel
identifi ed as “CHASSIS GND” for this purpose.
Note: Do not confuse the chassis ground with the smaller return ground labeled
“RETURN/GND”, also on the rear panel of the PFM.
I) Circuit Breakers
1) Circuit Breaker Installation
Circuit breakers must be installed to use any of the switched outputs. The PFM accepts only specially designed plug-in
“mid-trip” circuit breakers with auxiliary contacts, which are available from NEWMAR. (The mid-trip function is explained
later). Refer to the Specifi cations section for available breaker values and ordering info.
Refer to
Figure 7
, on the next page and install the plug-in circuit breakers as follows:
