PUB 50413
D64RPBH13 SERIES B1 GROUND FAULT RELAY
Revision 2
September, 2009
Page 8
2.2.4
OUTPUT CIRCUIT BREAKER OPERATING MODE –CONTACT STATE
The two different OPERATING MODES are described under the glossary of terms. The setting of
DIPswitch 12 determines the operating mode of the D64RPBH13 output circuit breaker. This is shown
in Table 4. Use this table when deciding on field connections. The state of the output circuit breaker
contacts is shown in Table 5. Also, refer to the CONNECTIONS section.
Table 4: Output Circuit Breaker Operating Mode
DIPSWITCH
SETTINGS
OUTPUT CIRCUIT
BREAKER
OPERATING MODES
12
L=LEFT
R=RIGHT
L
*
NON-FAILSAFE
R
FAILSAFE
* Factory Setting
2.3
TAMPER PROOF DIPSWITCHES
Eleven of the twelve DIPswitches are used to program the D64RPBH13. However, to discourage
unauthorized manipulation, the preselected settings can only be changed by going through the
procedure outlined below.
When an attempt is made to change the settings without going through this procedure, the green and
red LEDs start to blink alternately until the switches are returned to their original positions. Should the
switches be left in other than the preselected settings, the preselected settings, being stored in non-
volatile memory, remain valid.
The proper procedure to change settings is as follows:
1.
The dipswitches are placed in the new positions (ignoring the blinking LEDs).
2.
Within 15 seconds after the last change was made (or control power was applied), the system
is brought in test mode using the local pushbutton, causing the new settings to become active.
Since the system will trip now, changing the settings cannot go by undetected. See section 2.5
for a description of how to invoke test mode.
Note that any trips must be reset before this procedure can be completed.
2.4
INDICATION
There are two LED’s on the front of the D64RPBH13.
-
A green RUN LED shows correct operation by slowly flashing (1 s on/ 1 s off) when control
voltage is applied to terminals L+ & N-.
-
A red LAST TRIP LED shows short 0.25 s flashes as a code indicating the cause of LAST
TRIP:
-
One flash every few seconds means that the ground fault current exceeded the set
G/F Trip Level during the G/F Trip Delay time.. In case the G/F Trip Inhibit function is
enabled, the ground fault current may have exceeded the Trip Inhibit Level (overriding
the G/F Trip Delay time), but in that case the upstream tripping device tripped correctly
within 1.2 s and after the current dropped to zero as a result of that, the D64RPBH13
activated its output circuit breaker to isolate the faulty circuit. This trip is labelled
Ground Fault.
