WHARTON 4850 - 8 - Relay Output Configuration; Relay Connections, Operation, and Timing

Issue 2.0
4850 / 4860 Master Clock
Operating and Installation Instructions
8-1
Operation
The relay can be programmed to operate every 5 seconds,
every minute, every hour, once per day at a user programmable
time or to signal a fault condition.
The relay contacts are rated for 500mA @ 30v DC operation.
The minimum contact load is 1mA @ 5v DC. The contact
closure duration is 100mS.
Setting the Programmable Relay Time
When the 4850 / 4860 is used to provide one contact closure
per day it is recommended that the time chosen is at 03:00.
This allows the synchronised equipment to be adjusted for the
seasonal time change on the day that it occurs. Most
conventional systems use a contact closure at 00:00 which will
not update the synchronised equipment for the seasonal time
change until the next day.
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8 - Relay Setup
4850 / 4860 Relay Connections
10 way terminal block
no N.O. Contact
nc N.C. Contact
C Common
Note:
The relay is configured so that
contacts no-C are normally open and
contacts nc-C are normally closed.
For example, if the relay is set to
close every hour for 100ms, contacts
no-C will close for 100ms on the hour,
while contacts nc-C will open for
100mS.
Normal time display
Function ‘Time Setting Mode’. Press ‘+’
six times to move to relay setting mode.
Function ‘Relay Setting Mode’.
Press ‘^’ to select.
Current mode flashing. Press ‘+’ and ‘-’ to
change relay mode. Press ‘^’to exit, see
below if selected mode is ‘PRO’.
Selected relay mode is ‘Program’.
Press ‘^’ to set activation time.
Use ‘+’ and ‘- to program relay
operation minutes time. Press ‘^’
to set operation time hours.
Use ‘+’ and ‘- to program relay
operation hours time. Press ‘^’
to exit.
Normal time display.
If your 4850 /
4860 is fitted
with NTP,
EBU, S2, S4
or .IMP
options, you
may need to
press the ‘+’
switch more
than 6 times.