Mini Maestro User Guide 17
Issue Number: 5 www.controltechniques.com
3.5 Signal connections
Table 3.1 Signal connections common to both mounting kits
DC supply connections for 3MB
DC supply connections for 2MH
Motor connections for 3MB
Motor connections for 2MH
Signal cables and power cables must be segregated and wired through different
trunking.
Terminal
No.
Description I/O Notes
1
I
MOT
O
Analog signal proportional to the effective current in the motor.
Output signal ± 8V at maximum current.
2 Protection active O
NPN open-collector output 100mA, 47V. Use this to enable external
protection devices when the drive trips.
3 TPRC I/O
Analog signal proportional to the value of the requested current.
Signal range ±10V. When at ±10V the drive generates peak current.
When used as an input, and the same voltage range is applied, the drive
becomes a current amplifier using the applied voltage as current
reference.
40V
Signal common
5 -10V reference O 3mA max
6 +10V reference O 3mA max
7 Enable I
When a 10V DC to 30V DC signal is applied to this terminal, the drive is
enabled. When the signal is discontinued, the drive is disabled (0V).
Input impedance = 47kW
8
Speed reference
(non-inverting input)
I
When a differential signal from the external controller is not available,
connect terminal 10 to terminal 9.
90V
Signal common.
10
Speed reference
(inverting input)
I
The speed reference signal input is a differential input to minimize noise
problems.
11
Tacho
(non-inverting input)
I Tachogenerator signal.
12
Tacho
(inverting input)
I Tachogenerator signal.
NOTE
13 +DC I
14 -DC I
13 + 14 +DC I
15 + 16 -DC I
15 Motor M1 O Motor positive
16 Not used
17 Motor M2 O Motor negative
17 Motor M1 O Motor positive
18 Motor M2 O Motor negative
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