V E R I C O L O R
®
S P E C T R O
11
Cable Connection and Wiring
The VeriColor Spectro is designed to utilize the same cable configuration as the VeriColor
Solo; however, due to the increased power requirements of the VeriColor Spectro, RS232
communication should be limited to cable lengths of less than 15 meters. For cable distances
longer than 15 meters it is recommended that the RS485 communication scheme be utilized.
The VeriColor Spectro RS485 communications wiring may be configured as either half or full
duplex on a single drop RS485 line. Usage of the RS485 communication requires proper
ground termination for both the power supply cable and the RS485 cable; any notable
differences in potential between the cable grounds may result in intermittent communication,
communication failure and possible damage to the instrument.
1.
After the instrument has been mounted, attach the female connector of the
'Power/Comm/Control' cable (p/n: VCS50-EUR8-5DB) to the male connector (longer,
threaded), located on the back end of the VeriColor Spectro, and tighten.
2.
The other end of this cable has a DB9 connector and several stripped and tined wires.
This end interface to power, computer and discrete devices.
a.
Instrument power is applied via the
white
(+) and
brown
(-) wires (+24 Vdc ±2 Vdc)
IMPORTANT:
A limited current source must be used. The applied operational power
shall be a fi24 Vdc, ±2 Vdc tolerance, having a 3-Amp capacity.
b.
RS232 communications is obtained via the pre-wired DB9 connector.
c.
If manual or discrete operation is needed, attach the appropriate wires to controlling
device (relay, PLC terminal, etc.). These lines are the READ, 10's, 1's, and DSR inputs
and are low-power, active high inputs. Refer to next section for details.
3.
If discrete output, PLC feedback or RS485 interfacing is needed, attach and tighten the
male connector of the 'Discrete Interface' cable (p/n: SE108-EUR8-5M) to the female
connector (short, non-threaded). The connector is located on the back of the VeriColor
Spectro instrument.
4.
The other end of this cable has several stripped and tined wires allowing low power
interface to discrete devices and/or attachment to an RS485 port (4-wire).
a.
'Pass', 'Fail', 'Action' and 4 discrete channels are the default output signal set-up.
b.
Optional RS485 control (communications) is set-up by changing the 4 discrete
channels.
c.
Attach the appropriate wires to the controlling device (relay, PLC terminal, etc.).
These outputs all use a common feed or return line. Refer to next section for details.
5.
See the diagrams on the next several pages and appendices for electrical interface details
plus examples.
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