Elmo EXTRA IQ RAVEN, RAV-25/60 4.4 External Current Limit - Continuous (ECLC) , 4.5 External Current Limit - Peak (ECLP)

Raven Installation Guide Servo Control Operation
MAN-RAVIG (Ver. 1.1)
4-3
4.4 External Current Limit - Continuous (ECLC)
The continuous current limit of the Raven amplifier can be scaled down by an external
voltage or by an external resistor connected from pin J2/1 (ECLC) to pin J2/2 (ECLRET).
4.4.1 External Voltage
An external positive voltage (0 to 3.75 V) to terminal J2/1 (ECLC) in reference to terminal
J2/2 (ECLRET) will control the continuous current limit from zero to Ic(nom).
 The voltage is internally clamped to 3.75 V whenever the external V ECLC is greater
than 3.75 V.
 The external voltage source must be able to source/ sink at least ±0.4 mA.
 The maximum absolute VECLC is 12 V.
4.4.2 External Resistor
Connect an external resistor between terminal J2/1 (ECLC) and terminal J2/2 (ECLRET).
The resistor value is given by:
 0 < RECLC < 11.4 K (1/8 Watt)
 At R ECLC greater than 11.4 K, the current limit will be internally clamped to the
nominal value.
 IC(no m) is the nominal continuous current limit of the amplifier.
4.5 External Current Limit - Peak (ECLP)
The peak current limit of the Raven amplifier can be scaled down by an external voltage
or by an external resistor connected between pin J2/3 (ECLP) and pin J2/2 (ECLRET).
4.5.1 External Voltage
An external positive voltage (0 to 3.75 V) to terminal J2/3 (ECLP) in reference to terminal
J2/2 (ECLRET) will control the peak current limit from zero to Ip(nom).
 The voltage is internally clamped to 3.75 V whenever the external VECLP is highe r than
3.75 V.
 The external voltage source must be able to source/sink at least ±0.4 mA.
 The maximum absolute VECLP is 12 V.
VECLC
IC(new) = 3.75V * Ic(nom)
VECLC
IC(new) = 3.75V * Ic(nom)
VECLP
Ip(new) = 3.75V * Ip(nom)
VECLP
Ip(new) = 3.75V * Ip(nom)
(Kohm) = 12.5 *
RECLC
Ic(new)
Ic(nom)
-1
(Kohm) = 12.5 *
RECLC (Kohm) = 12.5 * RECLC
Ic(new)
Ic(nom)
-1