Electrical System
11-2
Part 1079832_04
E 2015 Nordson Corporation
Overview of Electrical Operation
An applicator has two types of heated zone: adhesive manifold and heated
air manifold. The adhesive manifold zones heat the adhesive in the
applicator, and the heated air manifold zones heat the pattern air. Heating
and temperature sensing of the zones is accomplished through cordsets.
Cordsets
Each heated zone has a cordset that is connected to one sensor and one or
two heaters inside the applicator. Cordsets are then electrically connected,
via a connector plug, to a temperature control channel on a melter control
system or on a standalone temperature controller. The control system
receives the sensor electrical signal and regulates the electrical power
supplied to the heater(s) based on the signal. There are two types of cordset:
adhesive manifold and heated air manifold.
Cordsets are characterized by the type of sensor present in the cordset
assembly:
S T‐style cordsets have 120‐ohm nickel resistance temperature
detectors (RTDs)
S M‐style cordsets have 100‐ohm platinum resistance temperature
detectors (RTDs)
T‐Style Cordset
See Figure 11‐2. A T‐style cordset has a rectangular 6‐pin male connector
that connects to a 6‐pin female connector on a hose or a low‐power
extension or splitter cable. Low‐power cordsets are typically used for heated
zones with a power requirement of 900watts or less.
3
4
5
2
1
HEATER
HEATER
RTD
RTD
GROUND
12
3
5
4
Figure 11-2 T-style cordset (typical)
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