ABB REF630 - Checking Transducer Circuits; Checking Binary Input and Output Circuits; Checking Binary Input Circuits; Checking Binary Output Circuits

1. Check the current circuit.
1.1. Verify that the contacts are of current circuit type.
1.2. Verify that the short circuit jumpers are located in the correct slots.
2. Check the voltage circuit.
2.1. Verify that the contacts are of voltage circuit type.
2.2. Check that no short circuit jumpers are located in the slots dedicated for
voltage.
3. Check the alarm and trip circuits.
3.1. Check that the correct types of contacts are used.
2.10 Checking transducer circuits
• Verify from the manufacturer that the total circuit resistance is under specified
values from the instrument (transducer) manufacturer.
2.11 Checking binary input and output circuits
2.11.1 Checking binary input circuits
• Preferably, disconnect the binary input connector from the binary input cards.
• Check all the connected signals so that both the input level and the polarity are in
accordance with the protection relay specifications.
Do not use AC voltage. Binary inputs are rated for DC voltage only.
2.11.2 Checking binary output circuits
• Preferably, disconnect the binary output connector from the binary output
cards.
• Check all connected signals so that both load and voltage are in accordance with
the protection relay specifications.
1MRS756801 E Section 2
Starting up
630 series 17
Commissioning Manual