Crystal Vision
Installation
Indigo 2 CoolFlow User Manual R1.3
10
20/06/2012
Power supply relay connections
The power supply module has a changeover relay to indicate if the frame is in an alarm state
caused by a power supply problem, a fan stopping or an overheating frame.
Pinout is as follows:
Upper Power Supply Relay Connections
Description
Pin number
relay common
Remote 2 pin 14
open on fault
Remote 2 pin 23
close on fault
Remote 2 pin 5
Lower Power Supply Relay Connections
Description
Pin number
relay common
Remote 4 pin 14
open on fault
Remote 4 pin 23
close on fault
Remote 4 pin 5
Note:
The current though the relay contacts should be limited to a maximum of 200mA.
RJ45 422 Bus IO connector
Pin number
Function
1, 2 and 3
Not used – 75 ohm resistor to GND in frame
4
TX+ bus RS422
5
TX- bus RS422
6
Not used – 75 ohm resistor to GND in frame
7
RX+ bus RS422
8
RX- bus RS422
The signals on pins 4, 5, 7 and 8 are also available on the Remote 2 connector.
Note:
TX and RX are defined on the boards. This connector can be used to link two frames
where one frame is either an active frame or Statesman-enabled. Alternatively a
REMIND remote control panel can also be connected here and used to control up to two
passive Indigo 2 frames. If an external RS422 control device is to be used ensure that the
controller will drive the RX+ with TX+ etc.
Note:
Since there is no ground connection via the 422 Bus two frames or other pieces of
equipment that share this connection must have a common ground connection. This will
normally occur through the earth pins on the mains connectors.