Nordson freedom - Connect Inputs;Outputs (Optional)

Installation
3-32
Part 1123087_02
 3/2014 Nordson Corporation
Connect Inputs/Outputs (Optional)
The melter is equipped with four standard user‐configurable inputs and three
standard user‐configurable outputs. Inputs/outputs are customer‐wired to the
melter and then set up through the touchscreen to provide one of the control
options shown in Tables 4‐16 and 4‐17 in Section 4, Setup.
Inputs are activated using a constant 10 to 30 VDC signal voltage, which is
supplied by the customer's control equipment. The inputs are not polarity
sensitive.
Outputs are used to communicate with user‐supplied production equipment
or control hardware, such as a programmable logic controller. All output
contacts are rated at 240 VAC, 2 A or 30 VDC, 2 A. All contacts are normally
open when the melter is switched off.
WARNING! The operator can override the melter inputs through the control
system. Make sure the control logic for any external device that sends an
input signal to the melter is programmed to prevent the creation of an unsafe
condition in the event that the operator overrides an external input to the
melter.
See Figure 3‐24.
1. Route a 2‐, 4‐, 6‐, or 8‐conductor signal cable from the control equipment
to the melter and through the SL‐16 (3) strain relief on the bottom of the
melter.
NOTE: Use a signal cable suitable for NEC class 1 remote control and
signaling circuits. To reduce the possibility of electrical shorting, route the
cable so that it does not touch nearby circuit boards.
2. Connect each pair of input/output wires to the appropriate terminals on
connector P/Ns 277908 and 277909 from the ship‐with kit. See
Figure3‐24 for the terminal positions.
NOTE: To use input four, wiring must be connected to terminal 7 on
connector P/N 277908 and to terminal 14 on connector P/N 277909.
NOTE: Connector P/N 277909 (terminals 8-14) is physically keyed to
prevent it from being used in place of connector P/N 277908
(terminals1-7).