Orion System VCM Controller - Manual (Page 32)

Technical Guide
VCM Controller 32
Start-up & Commissioning
In order to have a trouble free start-up it is important to follow a few
simple procedures. Before applying power for the first time it is very
important to correctly address the controller and run through a few simple
checks.
Controller Addressing
All VCM controllers are equipped with address switches. If the VCM
controller is to operate as a stand alone system (not connected to any
other HVAC unit or VAV/Zone controllers) the controller address switch
should be set for address 1. When using the Modular Service Tool or
System Manager to program and configure the VCM controller you
would enter this address to communicate with the controller. When the
system is to be connected to other HVAC unit controllers on a commu-
nication loop, each controllers address switch must be set with a unique
address between 1 and 59. When the VCM controller will be used with
VAV/Zone controllers the VCM controller’s address switch must be set
as address 59, no exception. See Figure 29 for address switch setting
information. For detailed information regarding communication wiring
and connection for interconnected and networked systems, please see
the Orion System Installation & Troubleshooting Guide.
Power Wiring
One of the most important checks to make before powering up the sys-
tem for the first time, is to confirm proper voltage and transformer siz-
ing for the controller. Each VCM controller requires 8 VA of power
delivered to it at 24 VAC. Each 2 slot expansion board requires 10 VA
at 24 VAC and each 4 slot expansion board requires 20 VA at 24 VAC.
You may use separate transformers for each device (preferred) or power
several devices from a common transformer. If several devices are to be
powered from a single transformer correct polarity must be followed.
Warning: Observe Polarity! All boards must be wired with
GND-to-GND and 24 VAC-to-24 VAC. Failure to
observe polarity will result in damage to one or
more of the boards. Expansion Boards must be
wired in such a way that the Expansion Boards and
the VCM Controller are always powered together.
Loss of power to the Expansion Board will cause
it to become inoperative until power is restored to
the Expansion Board.
Check all wiring leads at the terminal block for tightness. Be sure that
wire strands do not stick out and touch adjacent terminals. Confirm that
all sensors required for your system are mounted in the appropriate
location and wired into the correct terminals on the VCM controller. Be
sure any Expansion Boards connected to the VCM controller are also
correctly wired just as you did for the VCM controller.
After all the above wiring checks are complete, apply power to the
VCM controller and all expansion boards connected to it.
4
NETWORK
TOKEN
16
32
8
SW1
ADD
2
1
ADDRESS
V6
POWER
GND
24VAC
L1
D16
R6
C9
SC1
R1
1
U1
1
D13
C16
VR2
TB4
R27
C13
R10
VR1
C19 C18
R7 D10
R13
D12
C7 CX10
U10
CX12
U12
U14
CX14
PJ3 PJ2
PJ1
EXPANSION
PRESSURE
SENSOR
C17 D15
R26
C20 R25
R24
R22
U15
CX13
U13
C15
R19
R15
C14
D18 D17
PU1
PU2
PU3
PU4
PU5
PU7
D6
D7
D8
D9
D11
D14
C12
C10 0-5 VDC 0-1 VDC
JP1
C1
1
X2
GND
TB3
INPUTS
GND
GND
+VDC
AIN1
AIN2
AIN3
AIN4
AIN5
AOUT1
AOUT2
AIN7
RN5
D19
CX15
16
32
TOKEN
NETWORK
8
4
2
1
Address Switch Shown Is
Set For Address 1
Address Switch Shown Is
Set For Address 13
Controller
Address Switch
This Switch Should Be
In The OFF Position
As Shown
Note:
The Power To The Controller Must Be Removed And
Reconnected After Changing The Address Switch Settings
Caution
Disconnect All Communication Loop Wiring From The
Controller Before Removing Power From The Controller.
Reconnect Power And Then Reconnect Communication Loop
Wiring.
ADDRESS ADD
ADDRESS
ADD
ADDRESS
ADD
The Address For Each Controller
Must Be Unique To The Other Controllers
On The Local Loop And Be Between 1 and 59
Figure 29: VCM Controller Address Switch Setting