maxon motor ADS 50/5, Operating Instructions Manual

Page: 9 / 14

maxon motor
4-Q-DC Servoamplifier ADS 50/5 Operating Instructions
5.2 Outputs
5.2.1 Current monitor “Monitor I”
The servoamplifier makes a current actual value available for monitoring pur-
poses. The signal is proportional to the motor current.
The “Monitor I” output is short-circuit protected.
Output voltage range -10 ... +10 VDC
Output resistance
100
Ω
Gradient approx. 0.8 V/A
positive voltage on current monitor
output corresponds to a negative motor
current
negative voltage on current monitor
output corresponds to a positive motor
current
5.2.2 Speed monitor “Monitor n”
The speed monitor is primarily intended for the qualitative estimation of the dy-
namics. The absolute speed is determined by the properties of the speed sen-
sors and by the setting of the n
max
potentiometer. The output voltage of the
speed monitor is proportional to the number of revolutions. The output voltage
of the speed monitor is 10 V when the maximum number of revolutions set by
the n
max
potentiometer has been reached.
The “Monitor n” output is short-circuit protected.
Output voltage range -10 ... +10 VDC
Output resistance
100
Ω
Example: -10 V
corresponding speed -n
max
(CCW)
0 V corresponding speed 0 rpm
+10 V corresponding speed +n
max
(CW)
5.2.3 Status reading “Ready”
The “Ready” signal can be used to report the state of operational readiness or a
fault condition on a master control unit. The “Open Collector” output is, in nor-
mal cases, i.e., no faults, switched to Gnd. In the case of a fault due to excess
temperature, excess current, voltage processing error or too high encoder input
frequency, the output transistor is disabled.
An external additional voltage is required:
Input voltage range max. 30 VDC
Load current ≤
20 mA
The fault condition is stored. In order to reset the fault condition, the servoampli-
fier must be re-released (Enable). If the cause of the fault situation cannot be
removed, the output transistor will immediately change to the not conducting
state again.
July 2009 Edition / Doc. No. 538837-07 / Subject to change maxon motor control
9