|
Use CRI Hardware Pack H123-F containing the following
components shown in Table 2.0.
Table 2.0: Recommended Hardware |
Header |
Mfg. & P/N |
H124-F Hardware Pack |
Qty |
Description |
Mfg. & Part No.1 |
J1 |
Molex No. 09-50-8041
26-60-4040 |
1 |
Housing |
Molex No.
09-50-8041 |
4 |
Terminal
(tin) |
Molex No.
08-50-0106 |
J3
–
J6
|
Molex No.
22-29-2031 |
4 |
Housing |
Molex No.
22-01-3037 |
12 |
Terminal
(gold) |
Molex No.
08-55-0102 |
J12 |
Molex No.
22-29-2121 |
1 |
Housing |
Molex No.
22-01-3127 |
12 |
Terminal
(gold) |
Molex No.
08-55-0102 |
J13 |
Molex No.
22-29-2061 |
1 |
Housing |
Molex No.
22-01-3067 |
6 |
Terminal
(gold) |
Molex No.
08-55-0102 |
Mounting Hardware
|
5 |
PCB
Support |
Richco No.
CBS-4-19 |
1 |
Aluminum
Spacer |
Richco No.
ALSS6-2 |
1 |
Screw |
6-32 x 5/8 |
1 |
Nut |
6-32 |
1 Or equivalent
|
 Input Power Connection to Header J1
Refer to Figure 1.0 for input power wiring. One or two power
supplies in the range of 36 – 75 VDC should be connected at
header J1. The Fusion-4 can supply up to 3.0 Amps (still air) at
24 VDC to the fan load at 55°C.
Fan Connection to Headers J3-J6
Nine Fans: The Fusion-4 distributes power to and monitors the
tachometer signals from nine three-wire fans. Referring to
Figure 1.0, connect the fans to headers J3 through J11. Fan
wires are usually color coded with red for +, black or blue for -
and white or yellow for tachometer signal. Fan current at each
fan header must not exceed 4.0 Amps. Total current required by
the fans connected to the Fusion-4 must not exceed 3.0 Amps
(still air) at 24 VDC.
Less than Four Fans: Through the I2C, each fan header may be
disabled. When disabled, the alarm outputs associated with that
fan header will always show no alarm.
Connection of Remote Temperature Sensor to header J12
Temperature Sensor Connection when I2C Control is used: When configured to operate with I2C based speed control,
temperature readings from both sensors are available. These
temperatures do not affect speed or alarms in this control mode.
Temperature Sensor Control: The Fusion-4 can be configured
to operate with either an external sensor or the on-board sensor,
which is used to provide temperature based fan speed control
and alarming. Referring to Figure 1.0, connect the external
sensor if used to header J12. There is no polarity consideration
when connecting the sensor. Temperature accuracy and
hysteresis is 2ºC.
Connection of Dual I2C Bus to Header J12
I2C Bus Speed Command Inputs when Temperature Sensor
based Fan Control is used: When configured for temperature
sensor based fan control, header J12 will accept I2C commands
from either I2C bus. If a speed control command is given the
Fusion-4 will automatically switch to I2C based speed control
mode. Temperature sensor based fan control configurations
support all I2C alarm status registers.
Dual I2C Bus: The Fusion-4 uses 3.3 VDC bus operation. The
SCL (Pin Cx) and SDA (Pin Dx) are buffered with a NPX
PCA9511, which allows hot-swapping the I2C buses and uses
internal rise time accelerators for improved performance. The
total pull-up must be limited to 3 mA and bus capacitance
limited to 400 pf per the I2C specification. If only one I2C bus
is required either connection may be used. If two conflicting
commands are given on each bus at the same time the command
from the Primary bus will be used (S0 & D0).
Digital Inputs: The Speed input (Pin 4) and the ID inputs (Pins
1 - 3) are internally pulled to 3.3 VDC with 10.0KΩ resistors.
GND (Pin GND): Ground reference pin for the I2C busses and
Digital inputs.
Connection of LEDs to Header J13
Header J13 provides local indication of Alarm (Pin 1), Normal
(Pin 2), and Power (Pin 3) status. Referring to Figure 1.0,
connect alarm LEDs to header J13. All LEDs are referenced to
the Digital Ground (Pin GND). Choose single color LEDs or
two leaded, bi-color LEDs with a rated forward voltage (Vf)
between 1.6 and 2.4 VDC at a forward current (If) of between 15
and 25 mA. Nominal current applied to the LEDs is 8 mA.
Connection of Remote Alarm Circuits to Header J13
A MOS relay is provided on header J13 Pins 4 and 5 to provide
remote indication of alarm status. Referring to Figure 1.0,
connect logic circuits to header J7. The alarm circuit on header
J13 is isolated from all other pins. |
