Orion-system VCM-X Modular E-BUS Manual de usuario descargar pdf (Pagina 52)

Zone

INPUTS & OUTPUTS

VCM-X Modular E-BUS Controller Technical Guide

*BI1 - Emergency Shutdown Input*

This wet contact input is used to initiate shutdown of the HVAC unit

when an N.C. Smoke Detector (by others), Firestat (by others), or other

shutdown condition (by others) contact is opened. The controller remains

active and can initiate alarm relays.

*BI2 - Dirty Filter Contact Closure Input*

This wet contact input is required for Filter Status Indication and requires

a Differential Pressure Switch to initiate “Dirty Filter” indication.

*BI3 - Proof of Flow Input

A Proof of Flow Switch that provides a wet contact closure whenever

the HVAC unit Supply Fan is operating can be connected to this input.

If the Proof of Flow Switch contact opens while the Supply Fan is op-

erating, all Heating and Cooling is suspended or disabled. The Proof of

Flow Switch is an optional input. This means that you must conﬁ gure

the VCM-X E-BUS Controller to recognize this input signal.

*BI4 - Remote Forced Occupied Mode Input*

When this wet contact input closes, it will force the VCM-X E-BUS

Controller into the Occupied Mode. When the Remote Forced Occupied

Signal is removed, the controller will revert to the Unoccupied Mode

of operation if no internal or external schedule has been conﬁ gured or

is in effect when this occurs.

BI5 - Remote Forced Heating Mode Input

This wet contact input is used to provide a means for another BAS or

control device (by others) to force the unit into Heating Mode when it

closes. See the note regarding Remote Force Mode Setting that follows.

BI6 - Remote Forced Cooling Mode Input

This wet contact input is used to provide a means for another BAS or

control device (by others) to force the unit into Cooling Mode when it

closes. See the note regarding Remote Force Mode Setting that follows.

NOTE: Remote Forced Heating or Cooling Modes require that you

enter a value of 1 for both the Heating and the Cooling Setpoints for the

HVAC Mode Enable and the Mode Enable Sensor must be set as Supply

Air Temperature. The VCM-X E-BUS Controller will then look for wet

contact closures on the Remote Forced Cooling Mode and Remote Forced

Heating Mode inputs to enable the HVAC Modes. If both the Remote

Forced Heating and Remote Forced Cooling Modes are active, the unit

will operate in Vent Mode. The unit may also be operated in Vent Mode

by providing a wet contact closure signal to the Remote Occupied Input.

BI7 - Exhaust Hood On Input

When this wet contact input closes, the VCM-X E-BUS Controller

switches from Indoor Air Control to Outdoor Air Control. This is typically

used on CAV applications requiring MUA/CAV Dual Damper (Hood

On/Off) Modes.

BI8 - Remote Forced Dehumidiﬁ cation

This wet contact input is used to provide a means for another BAS or con-

trol device (by others) to force the VCM-X E-BUS Controller into Dehu-

midiﬁ cation Mode. You must set the Dehumidiﬁ cation Spt Indoor RH to

100% for the Remote Forced Dehumidiﬁ cation feature to function.

* 4 Binary Input Expansion Module

A 4 Binary Input Module can be used in lieu of using the VCM-X Ex-

pansion Module when only the ﬁ rst 4 Binary Inputs are required. You

can use the VCM-X Expansion Module or the 4 Binary Input Expansion

Module, but not both.

12-Relay Expansion Module

Please refer to the user-conﬁ gurable relays in Table 2, below, for relay

deﬁ nitions.

Expansion Modules Inputs & Outputs

Table 2: User-Conﬁ gurable Relay Outputs

No. Relay Description Details

1 Heating Stages Conﬁ gure (1) Relay for each stage of heat. Conﬁ gure (1) Relay for Mod heat.

2 Cooling Stages Conﬁ gure (1) Relay for each stage of cooling. For chilled water, conﬁ gure (1) Relay for cooling.

3 Warm-Up Mode (VAV Boxes) Conﬁ gure (1) Relay for Warm-Up Mode when Non-Orion VAV/Zone Controllers are used.

4 Reversing Valve (Heat Pumps) Conﬁ gure (1) Relay for Reversing Valve operation. Can be conﬁ gured for heating or cooling.

5 Reheat Conﬁ gure (1) Relay for On/Off reheat when used.

6 Exhaust Fan Conﬁ gure (1) Relay for enabling exhaust fan when building pressure control is used.

Pre-Heater

(Low Ambient Protection)

Conﬁ gure (1) Relay for pre-heat coil when required. Activated when the outdoor air temperature drops

below the ambient protection setpoint.

8 Alarm Conﬁ gure (1) Relay to initiate an alarm output when any VCM-X alarm occurs.

9 Override Conﬁ gure (1) Relay to initiate an output signal when space temperature override button is pushed.

10 Occupied Conﬁ gure (1) Relay to initiate an output signal any time the VCM-X is in occupied mode.

11 OA Damper

Conﬁ gure (1) Relay to initiate an output signal when the OA damper moves beyond its minimum during

economizer operation, or when the OA damper opens in a MUA application, or when the damper opens

during Hood On operation.

12 Heat Wheel

Conﬁ gure (1) Relay that turns heat wheel on when in occupied operation and turns heat wheel off when

in economizer mode.

13 Emergency Heat

Conﬁ gure (1) Relay for ﬁ xed stage Emergency Heat in a heat pump unit. Not available on VCM-X WSHP

E-BUS controller.

1 2 ... 47 48 49 50 51 52 53 54 55 56 57 ... 87 88

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