Ametek i Series User Manual download pdf (Page 32)

User Manual

18 i Series / iX Series

3.6 Connectors - Rear Panel

A number of connectors are located along the top rear covers. These connectors are in a

recessed area to protect them from shipment damage.

3.6.1 System Interface, Clock and Lock Connectors

WARNING: The system interface connector and Clock and Lock connectors may be at

hazardous voltages. These connections may not be used in table top applications. In

table top applications the safety cover must be in place. These connections may only

be used when the equipment is enclosed in a rack, only within one rack, only with

California Instruments supplied cables, and only between California Instruments

equipment.

J21 and J20 are the Clock and Lock connectors and are used to synchronize and control the

phase shift between the three outputs when 3 units are operating as a three-phase system with

the 15003iX - LK option.

The System Interface connector, J22, is used to connect the slave power sources to the Master

power source (the one with the controller) in multiple box systems. The connector is also used

for the external sync input, external modulation input and trigger output.

Table 3-2: System Interface Connector (J22)

J22

Description

Analog Common: analog signal common

MR B: Phase B master signal

Analog Common

CS B: Phase B current sum

CT Common: Current transformer common

OSC B: Phase B oscillator output

Analog Common

CL B: Phase B current limit reference

EXT MOD: External modulation input. A 10 volt input will modulate the output 10%.

Original versions of iX power sources required a 100 volt input to modulate the output by

10%. If you experience problems using the external modulation input, contact California

Instruments customer service.

OVR TEMP¯¯¯¯¯¯¯¯¯¯ : A logic low output to indicate an over temperature condition.

CNF¯¯¯ : Output relay state: Logic HI = open, LOW = closed.

FLT C: Phase C current limit fault control

FLT A: Phase A current limit fault control

F STB LO: Function Strobe / Trigger output Low signal. This is the emitter lead of an

optically isolated NPN transistor. The internal power controller turns this transistor on to

indicate a change of programmed values. See section 3.6.5 for details.

EX SYNC LO: External Sync Low signal. This is the ground return for the TTL external

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Ametek i Series User Manual Page 32