Nor-Cal Intellisys Adaptive Pressure Controllers - Manual (Page 23)

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I
ntellIsys
A
dAptIve
p
ressure
C
ontrollers
APC-OP-LIT 1/12
SSTechnology
interface card
SST 5136 DN
Tool
system
CAN_H
CAN_L
V+
V-
Drain
Interface
Card
Power
Supply
+24v
GND
IQ
Controller 1
IQ
Controller 2
IQ
Controller 3
IQ
Controller 4
Other Devices
Cordset
InterlinkBT RSC572-*M
Drop Junction
InterlinkBT VB2-FKM FKM FSM 57
BUS
Power Supply System and Typical Configuration:
The internal power converter of the IQD pressure controller is designed
to provide power to its internal electronics, valve motor and up to two
CDG gauges. Accordingly, the input power requirement is largely dependent
on the type of valve and gauges attached to the controller. Additionally, while
average power consumption is fairly low, the power supplied to the device
has to be able to handle peak power requirements particularly as the valve
motor performs accelerations. Insufficient power input will be detected by
the IQD controller and will result in a fault during the initialization phase.
To be able to obtain optimal pressure control performance it is essential for
the controller to have dedicated access to the pressure gauge. Accordingly
the preferred configuration is for the controller to host the gauge through
the analog signal link while the controller takes charge of reporting the
process parameter through the DeviceNet communication link
Required hardware:
A DeviceNet network is composed of a host controller, a bus and one or more
slave devices. The master node or host controller is commonly composed of a
computer equipped with a DeviceNet interface card. The bus is made of cable
connectors and junctions generally arranged in trunkline-dropline configura-
tion as shown in Figure 8.4.
Interface and bus system part numbers are given as indication only.
The IQD Controllers come ready to plug into any qualified DeviceNet network.
Prior to power up, you must initially:
1. Select the appropriate baud rate.
All the devices on the network must operate
at the same baud rate.
2. Select an individual device MACID that is
not already in use by another device.
IQD controller devices can be plugged in and removed from the network live,
however, if an inappropriate baud rate setting is selected it will bring the IQD
controller to a network fault and possibly bring other installed devices on the
bus to a fault. Upon connection the IQD controller will transmit a duplicate
MACID check to verify the uniqueness of its address. If another device with
the same MACID address is detected the IQD Controller transitions to a red
network LED status.
FIGURE 8.4 - TyPICAL DEVICENET hARDWARE INSTALLATION