ElmoMC SimplIQ Analog Servo Amplifiers-Ocarina Installation - Manual (Page 25)

Ocarina/Castanet Installation Guide Servo Control Operation
4-3
MAN-OCSIG (Ver. 1.4)
4.2.5 External Resistor
Connect an external resistor between terminal J1/14 (ECLP) and terminal J1/8 (ECLRET).
The resistor value is given by:
0 < R
ECLP
< 36.4 K (1/8 Watt)
At RECLP greater than 36.4 K, the current limit will be internally clamped to the nominal
value.
IP(nom) is the nominal peak current limit of the amplifier.
(K R
ECLP
ohm) = 37.4 *
Ip(new)
Ip(nom)
- 1 (K R
ECLP
(K R
ECLP
ohm) = 37.4 * ohm) = 37.4 *
Ip(new)
Ip(nom)
- 1
4.2.6 Latch Mode (LM)
By connecting J1/7 to J1/15, the amplifier is latched to disable mode whenever a Short,
Commutation or Over Temperature failure occurs. Disabling the amplifier temporarily by
removing the power from Enable pin J1/1 resets the latch. Be sure to restore the Enable
connection when the reason for the event no longer exists.
4.3 Status Indications
The following table lists the Ocarina and Castanet amplifier status indications.
Function Latch
Option
AOK SO1 SO2 SO3
1 Amplifier OK
(AOK)
N/A Low Open collector Open collector Open collector
2 External disable No Low Low Open collector Low
3 Current limit No Low Open collector Open collector Low
4 Short Yes Open collector Low Open collector Low
5 Over temperature Yes Open collector Open collector Low Low
6 Internal supplies
protection
No Open collector Low Low Open collector
7 Under voltage No Open collector Low Open collector Open collector
8 Over voltage No Open collector Open collector Low Open collector
9 Shunt* No Low Open collector Low Open collector
10 Power up reset No Open collector Open collector Open collector Open collector
11 Commutation
failure
Yes Open collector Low Low Low
* This indication can be used as a digital input for activating an external shunt regulator.
Table 4-1: Ocarina/Castanet Status Indications