Hardware Features
MN1258V4 08/2000
17
USR-V+
CURRENT
SENSE
OUTPUT n
OUT-5V
OUT-5V
10k
10k
CONTROL
LOGIC
RESET AND
ERROR LOGIC
COMMON
ONEOF
EIGHT
1nF
CHASIS
USR-GND
Main
Board
Front
Panel
VCC
1k
OUTPUT RESET
FROMCPU
1k
OUTPUT ERROR
1k
OUT-5V
USR-GND
USR-GND
Figure 3-7: Digital Output Circuit
If the device is reset too often during a short circuit condition (greater than twice per second) the
device will eventually overheat and will be damaged. Damage will also occur if the output is taken
above
usr-V+
, however transient excursions above
usr-V+
are clamped and therefore tolerated.
Each output has a freewheeling diode in parallel with the load. This allows inductive loads (such as
relays) to be used without damaging the output Darlington devices. The outputs can all switch
50mA continuously through a voltage of 12 to 24V. More current can be supplied, subject to a
power dissipation limit (shown on the graph in Figure 3-8). Further information is given in the
Allegro Semiconductors UDN2987 data sheet.
Summary of Contents for NextMove BX
Page 1: ...MN1258V4 08 2000 NextMove BX Installation Manual for Mint v4 Issue 4 0...
Page 2: ...NextMove BX Installation Manual for Mint v4 ii MN1258V4 08 2000...
Page 4: ...NextMove BX Installation Manual for Mint v4 iv MN1258V4 08 2000...
Page 8: ...NextMove BX Installation Manual for Mint v4 viii MN1258V4 08 2000...
Page 12: ...NextMove BX Installation Manual for Mint v4 xii MN1258V4 08 2000...
Page 18: ...NextMove BX Installation Manual for Mint v4 6 MN1258V4 08 2000...
Page 22: ...NextMove BX Installation Manual for Mint v4 10 MN1258V4 08 2000 Figure 3 3 Board Settings...
Page 46: ...NextMove BX Installation Manual for Mint v4 34 MN1258V4 08 2000...
Page 78: ...NextMove BX Installation Manual 66 MN1258V4 08 2000...
Page 82: ...NextMove BX Installation Manual 70 MN1258V4 08 2000...
Page 88: ...NextMove BX Installation Manual 76 MN1258V4 08 2000...
Page 92: ...NextMove BX Installation Manual 80 MN1258V4 08 2000...
Page 94: ...NextMove BX Installation Manual 82 MN1258V4 08 2000...