Spectrum Controls 1762sc-IF4OF4 - Manual (Page 18)

2-6 MicroLogix™ 1200 Analog Combo Module (4Ch IN / 4Ch Out)
User’s Manual Pub. 0300247-01 Rev. C
Figure 2-4
Note: Use the pull loop on the connector to disconnect modules. Do not
pull on the ribbon cable.
!
Attention
EXPLOSION HAZARD
 In Class I, Division 2 applications, the bus connector must be
fully seated and the bus connector cover must be snapped in
place.
 In Class I, Division 2 applications, all modules must be
mounted in direct contact with each other as shown on page 2-
4. If DIN rail mounting is used, an end stop must be installed
ahead of the controller and after the last 1762 I/O module.
Section 2.6
Field Wiring
Connections
Consider the following when wiring your system:
General
 Power and input wiring must be in accordance with Class 1, Division 2 wiring
methods, Article 501-4(b) of the National Electric Code, NFPA 70, and in
accordance with the authority having jurisdiction.
 Input and output channels are not isolated from one another.
 Use Belden™ 8761, or equivalent, shielded wire.
 To ensure optimum accuracy, limit overall cable impedance by keeping a cable
as short as possible. Locate the module as close to input devices as the
application permits.
 Digital and analog power must be supplied by an Isolated Secondary Limited
Energy Low Voltage source.
Inputs
 If multiple power supplies are used with analog inputs, the power supply
commons must be connected.
 For a thermocouple, use the shielded, twisted-pair thermocouple extension lead