Planningthesystem
SA3-SInstallation&CommissioningManual
7
12.
Reset button and error display can be replaced by a "
display module
" in the control cabinet.
13.
Position
: SA3-S generates a two-channel incremental output which can be used as a position input for
the control system. The resolution of the output is better than 1mm. Level: differential driver stage (2x
two-wire)
14.
For the purpose of the
arrest test
, a button (N.C.) can be connected in the power supply of the device
(connection B-3). Upon actuation of the button, the solenoid on the overspeed governor deenergises
and the safety gear is triggered.
15.
The SA3-S safety system can be installed in hydraulic lifts. If a double-acting safety gear is used here,
the same premises apply as to rope lifts. If only one safety gear should be used in the downwards direc-
tion, the following requirements must be met:
›Safety gear in the downwards direction must conform to the requirements of EN81-2:1998 +
A3:2009.
›According to EN 81 the speed restrictor must also have force guided safety switches which
opens the safety circuit in upward direction during magnet releasing.
›Voltage of safety circuit must act directly on the braking element (e. g. motor contactor), i. e. by
opening the safety circuit the car must come to a standstill through gravitational force.
16.
In case of hydraulic lifts the safety gear should not get jammed, during the car with the releasing sole-
noid coil is sinking slowly. For that prupose, the controller might activate the signal „in motion“for a short
time.
17.
The SA3-S safety device has electronic inputs. In order to avoid disturbances of the system, carry out
suitable interference suppression measures. These include:
›Suppression circuits of all inductors (contactor, relay, brake systems…)
›Suitable line filter for disruption of safety circuit from motor control
›Suitable shielding of the cables to the motor and to the the inverter etc.
›As possible a separate laying of the disturbing cable lines
