2-8
Tolomatic User Guide:
ICR Rod Style Integrated Control Actuator
2 :
I C R S V 1 B B A S I C - E L E C T R I C A L I N T E R F A C E , S P E C S & W I R I N G
2.4 Optional electronic Brake – ICR SV1B Basic Actuator
Tolomatic offers an optional spring-applied, electronically-released brake that can
be used with the actuator to keep the actuator from back driving, typically in vertical
applications. It can also be used for safety reasons or for energy savings allowing
the actuator to hold position when unpowered. The drive is signaled to apply the
brake which holds the actuator’s position prior to disabling the actuator. The brake
option is not a service part and must initially be ordered with the actuator as it is
internally configured with the drive.
If a brake is installed in the actuator, a 24V power source is needed. The brake
power is on pin 22 for the standard cable and on pin y for IP65 cable. The return
is on pin 23 for the standard cable and on pin Z for IP65 cable. See I/O Cable Pin-
outs on page 2-2. The controller will automatically engage / disengage the brake
using this power.
An unpowered ICR actuator will require a brake to maintain its position if the force
on the actuator exceeds the following requirements:
BN02 screw: 7.5 lbf (33.4 N)
BN05 screw: 12.5 lbf (55.6 N)
electronic Brake Power and Specifications
Input Voltage (minimum)
21.6 Vdc
Input Voltage (nominal)
24 Vdc
Input Voltage (maximum)
26.4 Vdc
Input Current Maximum (at input voltage maximum)
0.414 Amps
Static Torque
12.5 in-lbs maximum
Figure 2-12: ICR SV1B Basic Actuator Optional Electronic Brake Connection
CAUTION!
Operating an ICR actuator
with a brake installed
without providing brake
power can damage the
brake and the actuator.
+
-
24V POWER SUPPLY
BRAKE POWER
BRAKE POWER GROUND
