Basler Electric BE1-851 - Manual (Page 281)

Terminal Blocks
There are two sizes of terminal blocks used on the H1 case design, the current circuit block and the input-
output blocks. The current circuit terminal block is the larger of the two types and uses 8/32 inch Phillips
head screws with lock washers. The input-output block is the smaller of the two types and uses 6/32 inch
slot or Phillips head screws with no washer. The S1 case design uses slotted 10-32 washerless "pan-
head" screws for current inputs. The input-output blocks are the same size as those incorporated in the
H1 design, and use 6/32-inch slot or Phillips head screws.
As stated, the current circuit terminal block on the H1 case uses 8/32 inch Phillips head screws with lock
washers. The lock washer is an integral part of the current circuit wiring system and should not be
removed. Without the lock washer, the 8/32-inch screw may bottom out, preventing a tight fit against the
lug (screw feels tight but lug may move under the screw head).
The maximum wire lug width accommodated by the current circuit terminal block on the H1 case is .344
inches (8.6 mm). The maximum wire lug width accommodated by the input-output block on the H1 and S1
case is 0.320 inches (8.1 mm). Current inputs on the S1 case are not limited by the barrier board terminal
block design.
NOTE
Except as noted, connections to the relay should be made with a minimum
wire size of #14 AWG.
Settings
The settings for your application need to be entered and confirmed prior to placing the relay in service.
Register settings such as breaker duty can be entered to match the current state of your system.
Preparing the Relay for Service
Basler microprocessor-based protection systems are similar in nature to a panel of electromechanical or
solid-state component relays. Both must be wired together with inputs and outputs, and have operating
settings applied. Logic settings determine which protection elements are electronically wired to the inputs
and outputs of the device. Operating settings determine the pickup thresholds and time delays.
The logic and operating settings should be tested by applying actual inputs and operating quantities and
verifying proper output response. For more details, refer to Section 13, Testing and Maintenance. All of
the following connections and functions should be verified during commissioning tests:
• Proper connection and sensing of current and voltage signals
• Input and output contact connections
• I/O sensing versus virtual sensing
• Settings validation
• Proper operation of equipment (main or auxiliary)
• Proper alarming (to SCADA) and/or targeting
Refer to Section 7, BESTlogic™ Programmable Logic, for information about customizing preprogrammed
logic and creating user-defined logic, and Section 8, Application, for information about the application of
preprogrammed logic schemes.
Communication Connections
Front/Rear RS-232 Connectors
Front and rear RS-232 connectors are DB-9 female DCE connectors. Connector pin numbers, functions,
names, and signal directions are shown in Table 12-2. Figures 12-21 through 12-23 provide RS-232 cable
connection diagrams.
9289900990 Rev R BE1-851 Installation 12-19