Siemens 6RA70 A034 Alarm message from free function block FB9, A035 Drive blocked, A038 Overspeed

Alarm	Description
No.

A033	Alarm message from free function block FB8
	(active in all operating states)
	The binector connected via parameter U106 Index.001	is in the log. "1" state
A034	Alarm message from free function block FB9
	(active in all operating states)
	The binector connected via parameter U107 Index.001	is in the log. "1" state
A035	Drive blocked
	(active in operating states of – –, I, II)
	The monitoring function responds if the following conditions are fulfilled for longer than the time set in parameter P355:
	♦ Positive or negative torque or armature current limit reached
	♦ Armature current is greater than 1% of converter rated armature DC current
	♦ The actual speed value is less than 0.4% of maximum speed
A036	No armature current can flow
	(active in operating states of – –, I, II)
	This monitoring function responds if the armature firing angle is at the rectifier stability limit for more than 500 ms and the
	armature current is less than 1% of the converter rated armature DC current.
A037	I2t motor monitor has responded
	(active in operating states of – –, I, II)
	The alarm is activated when the calculated I2t value of the motor reaches the value which corresponds to the final temperature
	at 100% of permissible continuous motor current (= P113*P100).
A038	Overspeed
	(active in operating states of – –, I, II)
	The monitoring function responds if the actual speed value (selected in P595) exceeds the positive (P512) or negative (P513)
	threshold by 0.5%.
	Possible causes
	♦ Lower current limit has been input
	♦ Current-controlled operation
	♦ P512, P513 are set too low
	♦ Tachometer cable contact fault in operation close to maximum speed
A039	I2t value of power section too high
	(active in all operating states)
	This alarm is activated if the permissible I2t value for the relevant power section is reached. At the same time, the current limit is
	set to P077 * 100% of the converter rated DC current. This limit is not cancelled again until the setpoint drops below 100% of the
	converter rated DC current. See also Fault F039 and Parameter P075.
A043	Automatic field current reduction if EMF is too high in operation
	(active in operating states of – –, I, II)
	This alarm is active only when parameter P272=1 and activated if the following equation applies to firing angle α (armature)
	before limitation (K101):
	α > (αW (inverter stability limit acc. to P151) – 5 degrees) or , at a low (pulsating) current
	α > (165 degrees – 5 degrees)
	The field is reduced simultaneously with A043, implemented through control of the armature firing angle to (αW (or 165 degrees)
	- 5 degrees) using a P controller whose output reduces the EMF controller setpoint. For this reason, “Field current setpoint input
	through internal EMF control” (PO81=1) must be parameterized.
	When a change in torque direction is requested, both torque directions are inhibited until the calculated control angle (K101) is
	<165 degrees for the armature current requested in the new torque direction, i.e. until the field, and thus the EMF, have been
	reduced accordingly.
	See also parameter P082.
A044	An alarm is active on one slave connected to the paralleling interface
	(active in all operating states)
A046	Analog select input for main setpoint (terminals 4 and 5) faulty
	(active in operating states of ≤ o6)
	This alarm is activated when P700=2 (current input 4 to 20 mA) and the input current is less than 3mA.
A047	Analog select input 1 (terminals 6 and 7) faulty
	(active in operating states of ≤ o6)
	This alarm is activated when P710=2 (current input 4 to 20 mA) and the input current is less than 3mA.
9-30		Siemens Energy & Automation
		SIMOREG DC Master Base Drive Panel Operating Instructions