Opening the electrical enclosure
Installation
3-38
Part 1120277_01
E 2012 Nordson Corporation
Installing Melter Outputs
The PURBlue 4 melter is equipped with three user-configurable digital
outputs. Outputs are used to communicate with user-supplied production
equipment or control hardware, such as a programmable logic controller.
Each output is customer-wired and then set up in the melter's firmware to
provide one of the following outputs:
S The melter is ready
S The melter is ready and the motor is on
S A fault has occurred
S The reservoir is empty
S The service LED is on
All output contacts are rated for 30 VDC 2 A. All contacts are normally open
when the melter is turned off.
NOTE: Additional input/outputs are available through an optional I/O
expansion card kit. Refer to Optional Equipment in Section 7, Parts.
To connect a digital output to the melter
1. Route a 2-, 4, or 6-conductor signal cable from the control equipment to
the melter, through the PG-16 penetration on the back of the electrical
enclosure. Use rigid or flexible conduit or a suitable strain relief to protect
the cable from the sharp edge of the conduit penetration.
NOTE: UseasignalcablesuitableforNECclass1remotecontroland
signaling circuits. To reduce the possibility of electrical shorting, route the
cablesothatitdoesnottouchnearbycircuitboards.
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