88
Magtrol Model DSP7000 Dynamometer Controller
Chapter 8 – Optional Equipment
opera
tion
pin
signal
name
input/
output
level
intended use
secondary
use
notes
5
5 Volts
Output
+ 5 VDC
Supply external
sensor
---
* Referenced to
PIN18, 200mA
max, internally
fused at 500mA
6
External
Alarm
Input
OPEN or
5 Volts
Common
External
contact
opening will put
the DSP7000
in an alarm
condition
If not used
as external
alarm, the
user can use
as another
digital input.
(DIN3)
10K internal
pullup resistor to
5 Volts, Switch
to PIN19
7
DI1
Input
OPEN or
5 Volts
Common
The user can
use as digital
input
---
10K internal
pullup resistor to
5 Volts, Switch
to PIN20
8
DI2
Input
OPEN or
5 Volts
Common
The user can
use as digital
input
---
10K internal
pullup resistor to
5 Volts, Switch
to PIN21
9
DOUT1
Output
OPEN
collector
Open collector,
less than
20 mA, can
be used to
switch on a
optocoupler or
small relay.
---
If inductive loads
are used, clamp
with a diode.
10
Alarm
Relay1
NO
Bidirectional N/A
Relay output,
to shut down
user equipment
if DSP7000
is in an alarm
condition
General
purpose user
relay
Recommended
used as a pilot
relay. LOW
VOLTAGE, LOW
CURRENT
11
Alarm
Relay1
NC
Bidirectional N/A
Relay output,
to shut down
user equipment
if DSP7000
is in an alarm
condition
General
purpose user
relay
Recommended
used as a pilot
relay. LOW
VOLTAGE, LOW
CURRENT
12
Relay2
NO
Bidirectional N/A
Relay output,
to turn motor
power on or off
(Controlled by
MTEST)
General
purpose user
relay
Recommended
used as a pilot
relay. LOW
VOLTAGE, LOW
CURRENT
13
Relay2
NC
Bidirectional N/A
Relay output,
to turn motor
power on or off
(Controlled by
MTEST)
General
purpose user
relay
Recommended
used as a pilot
relay. LOW
VOLTAGE, LOW
CURRENT