Micromod RetroPAK: SLC Installation Manual - Manual (Page 20)

SLC RetroPAK Controller
MODULAR I/O CONNECTIONS
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3. Route low-level signal wiring from the top left hand side of the housing and ac voltage
wiring from the bottom right hand side and distribute to appropriate terminals.
4. Use a small, flat-head screwdriver to loosen appropriate connection screws and clamps
on terminal blocks.
5. Strip approximately 5/16 inch (8 mm) of insulation from the end of each wire, insert wires
at assigned terminals, and secure terminal screws and clamps.
∆ WARNING
All wiring connected to the controller terminals must be rated for the
maximum voltage present, or alternately, wiring in circuits operating at
greater than 30 volts must be rated for at least twice the circuit voltage.
7. After all connections are completed and checked, do the following:
a. If communications are required, follow the applicable procedure in Section 5.
b. If all connections are completed, the ac power wiring can be connected at the
distribution panel (ac source).
* NOTE : Before putting the controller into operation, it must be configured using
the Visual Application Designer Software. See Section 1.1.2 for related
documents.
4.3 MODULAR PROCESS INPUT CONNECTIONS
This section describes the process input connections for the following input module types:
• 2004A Solid-State Relay Input Module - Section 4.3.2
• 2012A Current Input Module with Two-Wire Transmitter - Section 4.3.4
4.3.1 2004A SSR Input (DIM)
Make Solid-State Relay (SSR) connections as shown in Figure 4-3. These input modules are
used for sensing ON/OFF voltage levels. Each module provides optical isolation between the
field devices and the control logic. This isolation is limited to 250 Vrms at the terminal block.
Typical uses and applications for these input modules include sensing voltage and contact
conditions from: proximity switches, limit switches, selector switches, push buttons,
photoelectric switches, TTL compatible devices, float switches, or thermostats.
Wire rating: 600 V, -20°C +105°C UL, CSA approved
∆ WARNING
All wiring connected to the controller terminals must be rated for the
maximum voltage present, or alternately, wiring in circuits operating at
greater than 30 volts must be rated for at least twice the circuit voltage.
Input specifications are:
Input voltage range 2.5-28Vdc
mA Input current at Max Line 30
Max Logic Low Input 1V, 0.2 mA
Input Resistance (Ohms) 900
Module Response Time (msec) 1.5