Innotech Genesis V4 System - Manual (Page 60)

Installation Instructions for Innotech Genesis Systems
Edition 011100 4-5
4-1.2.2. Checking Digital Input Wiring. Digital input wiring to controllers and
digital input expansion modules should be checked to ensure the following conditions:
The digital signal source voltage is within the correct range. Refer to Table 4-2 for
digital input signal source specifications for the various digital input units.
The signal polarity is correct for digital input signals with DC sources.
Wiring to the signal actuator (switch, relay contacts, contact points, etc.) is correct
Paragraph 4-1.2.2.1 contains procedures for checking most Genesis units except for the
GENII DI REM Dry Contact Digital Input Module. Whereas most Genesis units use
external-source digital input signals, the DI REM signals are dry contact (voltage free)
inputs. Procedures for checking voltage-free digital inputs are contained in Paragraph 4-
1.2.2.2.
Table 4-2. Digital Input Signal Voltages.
UNIT SIGNAL VOLTAGE
GENESIS II Digital Controller 24Vac/24Vdc 15%
GENESIS I Digital Controller 24Vac/24Vdc 15%
GENII DIM Digital Input Module (LEM) 24Vac/24Vdc 25%
GENII MPC Mid Points Controller 24Vac/12Vdc 15%
GENII IDI REM Opto-Isolated Digital Input Module 12 – 24Vac/Vdc
GENII DI REM Dry Contact Digital Input Module Not Applicable
GENII MP REM Multipoint Module 24Vac/24Vdc 15%
4-1.2.2.1. External-Source Digital Inputs. The following procedures for
checking digital input wiring are specifically for the Genesis II Digital Controller.
However, they also apply to the other units listed in Table 4-2 except for the GENII DI
REM.
Refer to Section 3 for digital input terminal numbers for the various Genesis units
Figure 4-2 is a schematic representation of a typical Digital Controller installation
containing AC- and DC-powered digital inputs and how the wiring can be checked using
a digital voltmeter. Use Figure 4-2 for reference when performing the following
procedures: