Dragonfly/Butterfly Installation Guide | Servo Control Operation |
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4.2.2External Resistor
RECLC (Kohm) = 37.4 * | Ic(new) | - 1 | |
Ic(nom) | |||
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Connect an external resistor between terminal J1/9 (ECLC) and terminal J1/8 (ECLRET). The resistor value is given by:
0 < RECLC < 36.4 K (1/8 Watt)
At RECLC greater than 36.4 K, the current limit will be internally clamped to the nominal value.
IC(nom) is the nominal continuous current limit of the amplifier.
4.2.3External Current Limit - Peak (ECLP)
The peak current limit of the Dragonfly and Butterfly amplifiers can be scaled down by an external voltage or by an external resistor connected between pin J1/14 (ECLP) and J1/8 (ECLRET).
4.2.4External Voltage
An external positive voltage (0 to 3.75 V) to terminal J1/14 (ECLP) in reference to terminal J1/8 (ECLRET) will control the peak current limit from zero to Ip(nom).
Ip(new) = | VECLP | * Ip(nom) | |
3.75V | |||
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The voltage is internally clamped to 3.75 V whenever the external VECLP is higher than 3.75 V.
The external voltage source must be able to source/sink at least ±0.2 mA.
The maximum absolute VECLP allowed to be connected is 5 V.
