Input and Output Wiring Guidelines - Verasys - VAC1000 - VAC1001 - VAC1002

Verasys 18 Point 24 VAC Application Controller Installation Guide

Brand
Verasys
Product name
VAC1000
VAC1001
VAC1002
Document type
Installation Guide
Part number
24-10143-01477
Document revision
C
Revision date
2021-06-02
Language
English

Table 1 and Table 1 provide information and guidelines about the functions, ratings, and requirements for the controller input and output terminal guidelines for determining wire sizes and cable lengths.

In addition to the wiring guidelines in Table 1 and Table 1 use these guidelines when wiring controller inputs and outputs:

  • Run all low-voltage wiring and cables separate from high-voltage wiring.
  • All input and output cables, regardless of wire size or number of wires, should consist of stranded, insulated, and twisted copper wires.
  • Shielded cable is not required for input or output cables.
  • Using shielded cable is best practice for input and output cables that are exposed to high electromagnetic or radio frequency noise.
  • Inputs/outputs with cables less than 30 m (100 ft) typically do not require an offset in the software setup. Cable runs over 30 m (100 ft) may require an offset in the input/output software setup.
Table 1. Controller Terminal Blocks, Functions, Ratings, Requirements, and Cables

Terminal Block

Label

Terminal Label

Function, Ratings, Requirements

Determine Wire Size and Maximum Cable Length

UNIVERSAL

(Inputs)

+15 V

15 VDC Power Source for active(3-wire) input devices connected to the Universal INn terminals;

provides 80 mA total current.

Same as (Universal) IN n

Note: Use 3-wire cable for devices that source power from the +15V terminal.

COM

15 VDC Power Source Common for active (3-wire) input devices connected to the Universal INn terminals;

provides 80 mA total current.

Same as (Universal) IN n

INn

Analog Input - Voltage Mode(0–10 VDC)

10 VDC maximum input voltage Internal 67k ohm pull-down

See Guideline A in Table 1.

Analog Input - Current Mode (4–20 mA)

Internal 100 ohm load impedance

See Guideline B in Table 1.

Analog Input - Resistive Mode(0–600k ohm)

Internal 12 V. 15k ohm pull-up

Qualified Sensors: 0-2k ohm potentiometer

RTD (1k Nickel [Johnson Controls sensor] 1k Platinum, and A99B Silicon Temperature Sensor)

Negative Temperature Coefficient (NTC) Sensor (10k Type L, 10k JCI Type II, 2.252k Type II)

See Guideline A in Table 1.

Binary Input - Dry Contact Maintained Mode

1 second minimum pulse width Internal 12 V. 15k ohm pull-up

See Guideline A in Table 1.

ICOMn

Universal Input Common for all Universal Input terminals

Same as (Universal) IN n

BINARY

(Inputs)

IN n

Binary Input - Dry Contact Maintained Mode

0.01 second minimum pulse width Internal 17 V. 100k ohm pull-up

See Guideline A in Table 1.

Binary Input - Pulse Counter/Accumulator Mode

0.01 second minimum pulse width(50 Hz at 50% duty cycle)

Internal 17 V. 100k ohm pull-up

ICOMn

Binary Input Common for all Binary Input (IN) terminals

CONFIGURABLE

(Outputs)

OUT n

Binary Output - 24 VAC Triac (External Power Source only)

Connects OUTn to OCOMn when activated

External Power Source Requirements:

30 VAC maximum output voltage

0.5 A maximum output current

See Guideline C in Table 1.

OCOMn

Binary Output Signal Common All Configurable Outputs (COs) defined as Binary Outputs are isolated from all other commons, including other CO commons.

Same as (Configurable) Out n.

BINARY - RELAY

(Outputs)

OUT n NO

Normal Open Contact

Connects OCOM to OUT NO when activated.

UL 916

240 VAC 5A Resistive, 1.9 FLA/11/4 LRA, D300 Pilot Duty, + 70°C (158°F), 30 K cycles

EN 60730

240 VAC 3A Resistive, 3A Inductive,Cos(phi) = 0.6, -20° to 70°C (-4 to 158°F), 100K cycles

The RELAY output terminals can accommodate the following maximum wire sizes:

Two wires per terminal: 1.5 mm2(16 AWG) maximum

or

One wire per terminal: 2.5 mm2 maximum (12 AWG or 2–16 AWG)

Note: You must determine the required wire size for the high-voltage (>30 V) terminals according to relay ratings, the applied load, and the local, national, or regional electrical codes.

Maximum loads stated require 12 AWG or 2-16 AWG wires.

OCOMn

Relay Common

Isolated from all other terminal commons, including other Relay Commons.

Note: Reference all relay commons to the same pole of the supply circuit.

BINARY - Triacs

(Outputs)

OUTn-A

OUT n -B

Binary Output - 24 VAC or 240VAC Triac (External Power Source Only)

Connects OUTn-A and OUTn-B when activated.External Power Source Requirements:

30 VAC or 240 VAC maximum output voltage

0.5 A maximum output current

Note: Reference all triac commons to the same pole of the supply circuit.