Vanguard CT-7500 S2 - Manual (Page 12)

CT-7500 S2 USER’S MANUAL REV 2
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Table 2. Functional Descriptions of CT-7500 S2 Controls and Indicators
Item
Number
Panel Markings Functional Description
1 CONTACT INPUT
(C1-C12)
Female connectors for the contact channels. The CT-7500-12 S2 is pictured
with 12 channels.
2 0-300V
V1
3-pin connector. V1 voltage input channel is dedicated to monitoring circuit
breaker DC power supply or coil voltages. Voltage sensing range is from 0-255
volts, dc or peak ac.
3 0-300V
V2
3-pin connector. V2 voltage input channel is dedicated to detecting voltage
on/off status (present or absent) of an A/B switch. Voltage input ranges from
0-300 volts, dc or peak ac.
4 0-300V
TRIGGER
3-pin connector. Triggers voltage input for external trigger application. Voltage
levels ranging from 30 to 300 V, dc or peak ac.
5 CT CT input channel. Detects CB load current for Quick-Shot application.
6 100-120 Vac, 8A,
50-60Hz
Power plug and power switch. Built-in 12 Ampere circuit breaker.
7 GROUND Safety ground terminal.
8, 9, 10 D1, D2, D3
TRANSDUCER
INPUT
16-pin connectors. Digital travel transducer input channels.
11 R1 5-pin connector. Resistor type transducer input.
12 INITIATE 4-pin connector used for the switching circuit for operating the circuit breaker
under test.
13 OPEN
250V,
5A FAST-BLOW
Open circuit fuse: 5 Ampere, 250V, Fast-Blow.
14 CLOSE
250V,
5A FAST-BLOW
Close circuit fuse: 5 Ampere, 250V, Fast-Blow.
15 Built-in 4.5-inch wide thermal printer.
16 “PUSH” TO ARM Spring-loaded pushbutton switch. Press and hold to complete the Trip or Close
circuits for breaker tests.
17 Rugged alpha-numeric membrane keypad.
18 Back-lit LCD screen (20 characters by 4 lines); viewable in bright sunlight and
low-light levels.
19 RS-232C RS-232C serial computer interface port.
20 USB USB computer interface port.