User Manual

2-10 SM 04L31A01-01E
2.3 CTRL Module Assembly Tests
This section describes the test procedure for CTRL MODULE ASSY (B8700CL,
B8700CM, B8700CN, and B8700FT) which is used on the CX2000. This test is not
necessary if you will perform the general tests in section 2.2. Perform this test on the
module by itself.
Test Instruments
Instrument Specifications
DC current meter Accuracy: 0.01% of rdg
Withstanding voltage tester AC 1 to 3 kV, 500 VDC
Oscilloscope 200 kS/s or more, isolated input
Resistor 250 Ω ±1%
Jig A measurement instrument having the same functions and
characteristics as the CX2000 or CX1000.
Tests
• Withstand Voltage Test
Consult your nearest Yokogawa representative regarding the following tests.
• Output Accuracy Test
• Voltage Pulse Output Test
• Control Relay Output Test
• DI Test
• DO Test
Testing Environment
Ambient temperature of 23±5°C, relative humidity of 55 ±20%
CAUTION
• Before starting the test, allow the instrument to warm up for 30 minutes or more.
• Make sure the module is installed in the CX1000/CX2000.
Test Procedure
Perform a withstand voltage test on the module installed in the CX1000/CX2000 at the
points listed below.
Test Points Reference Values
Current and voltage pulse output to earth terminal on Leakage current of 2 mA or less at 1 kV AC for 1 minute
the CX1000/CX2000*
Control relay terminal to CX1000/CX2000 earth terminal
†
Leakage current of 2 mA or less at 1.5 kV AC for 1 minute
DO relay terminal to CX1000/CX2000 earth terminal
‡
Leakage current of 2 mA or less at 1.5 kV AC for 1 minute
DO (Tr) relay terminal to CX1000/CX2000 earth terminal
§
Leakage current of 2 mA or less at 0.5 kV AC for 1 minute
DI terminal to CX1000/CX2000 earth terminal
||
Leakage current of 2 mA or less at 0.5 kV AC for 1 minute
* Short mA, PULS, and C.
† Short NO, NC, and C.
‡ Short NO and C.
§ Short DO3—6 and C.
|| Short all DIs.