Basler Electric BE1-87B User Manual
Page 6
Manual
Revision and Date
Change
E, 10/01
•
Corrected the terminal numbering in Figure 2-5.
•
Changed the Power Supply Status Contacts label to Relay Trouble
Contacts in Figures 4-13 and 4-14.
•
Corrected various minor errors throughout the manual.
D, 03/01
•
Updated drawings, as required, to reflect changes to the cases and
overlays as a result of “pillow-type” switch implementation for CT Test
pushbutton.
•
Updated the style chart with front cover with CT test access option.
C, 04/00
•
Section 1: Added UL recognition to specifications. Changed voltage
rating specification from “75% of tap setting” to “300 Vac for 1 hour”.
•
Section 2: Corrected equation reference under Sample Calculation.
•
Section 4: Revised Figures 4-1 and 4-2 to show proper position of the
Reset button access on the S1 case.
•
Changed all power supply status references from “Relay Trouble Alarm”
to “Power Supply Status”.
B, 11/99
•
Added and updated drawings throughout the manual to accommodate
the three-phase version of the BE1-87B.
A, 08/99
•
Corrected various errors in the illustrations.
—, 06/99
•
Initial release
Hardware
Version
Change
T
•
Improved snubber resistor and SCR protection circuit.
S
•
Updated internal documentation.
R
•
Improved ribbon cable.
Q
•
This revision letter not used.
P
•
Improved reset switch on front panel.
O
•
This revision letter not used.
N
•
Improved factory assembly process.
M
•
Improved snubber circuitry to prevent false tripping.
L
•
Internal factory documentation updated.
K
•
Improved power supply board.
J
•
Improved stability of Relay Trouble output contacts during power-
up/power-down.
H
•
Not released to production.
G
•
Corrected labeling for CR1 and CR3 polarity on the SCR circuit board.
F
•
Improved relay stability during cycling of operating power.
E
•
CT Test pushbutton changed to “pillow-type” switch. Optional case cover
with CT Test pushbutton access introduced.
D
•
Improved immunity to ESD.
C
•
Applied Revision A enhancements to three-phase relays with new circuit
board design.
B
•
New circuit board design released for single-phase relays.
iv
BE1-87B Introduction
9282300990 Rev P