D21M I/O Subsystem - Studer OnAir 3000 Service Instructions Manual

SCore Live
1
9
Solder/Crimp View
(or Socket View)
Replacement Fan:
3.8

D21m I/O Subsystem

24 SCore Live
For power supply to the fans and fan status monitoring, two connectors are
provided – one at the front, the second at the rear of the unit. They are con-
nected in parallel, so either one can be used depending on the application. If
any of the fans should have a short or open circuit, the alarm signal is trig-
gered.
A 15-pin D-type cable (order no. C089.201167) for connection to the primary
PSU is required.
Please note that currently the fan monitoring is implemented for the use of
the fan unit within the SCore Live only.
For more information on cooling as well as guidelines for power dissipation
estimation refer to chapter
FAN/STATUS Connector (15-pin D-type, male, UNC 4-40 thread)
Pin Signal
1 +V (fan supply, +15...24 V)
cc
2 n.c.
3 GND
8
4 n.c.
Alarm relay + (open collector,
5
15
pulling up to V
6 n.c.
7 GND
8 n.c.
Order no. C072.010117
The D21m I/O system consists of various different analog and digital I/O
cards, general-purpose I/O cards, and cards for serial control. It is described
in a separate brochure (order no. BD10.275102).
1.2.2, paragraph 'thermal considerations'.
Pin Signal
9
10 n.c.
11 reserved (NTC)
12 n.c.
13 GND
if alarm triggered)
cc
14 n.c.
15 reserved (Alarm LED+)
GND
Date printed: 28.02.11