Product specifications

Chapter 3 Installing HA-680 driver
HA-680_V04
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3-8 Connecting regenerative absorption resistance /
capacitors
HA-680 has a regenerative absorption circuit as standard. The capacity of the regenerative resistance
incorporated into the main unit is 2 W. Under the operating conditions in which operation can be
performed only with the main unit, set the tact time above the calculation result shown in the table below.
For the RSF supermini series actuators, the regenerative absorption circuit incorporated as standard
has sufficient capacity. No external resistance or capacitor is required.
Driver Actuator Formula
FHA-8C
0.3 × Load inertia+0.1 (second)
HA-680-4
FHA-11C
0.6 × Load inertia+0.5 (second)
HA-680-6 FHA-14C
1.7 × Load inertia+2.0 (second)
Use the following as a guide when selecting the capacity of the external resistance/capacitor to be
connected.
(1) If an external capacitor is connected when the load inertia ratio is 2 or less:
Driver
Actuator Recommended capacitor mode
Capacity × quantity
Manufacturer
FHA-8C UPJ1H102MHH
1000μF × 1
HA-680-4
FHA-11C UPJ1H222MHH
2200μF × 1
HA-680-6 FHA-14C UPJ1H222MHH
2200μF × 4
Nichicon
Connect it to the VM and GND terminals of the HA-680 driver, as shown below.
External
capacitor
U
V
W
VM
R
Terminal block mode:
MC1.5/6-G-3.81
(Phoenix contact)
GND
VM
R
GND
U
V
W
z If the tact time is shorter than the calculation result, connect an
external resistance or external capacitor.
z If the tact time is shorter than the calculation result and no external
resistance or external capacitor is connected, the built-in fuse of the
regenerative resistance may be blown during operation.
z The built-in fuse cannot be restored once blown. As a result, the
regenerative circuit stops, causing a regenerative error alarm.
z When the alarm occurs, refer to “7-1 Alarms and diagnostic tips.”
CAUTION