YSI 6500 Environmental Process Monitor - Manual (Page 17)

Installation Section 2
2.5.2 AC POWER INPUT WIRING
The 6500 Monitor has a switching power supply and can operate on 100 to 240 VAC power.
When you remove the front panel of the 6500 Monitor, take care not to drop the cover since it is
not hinged to the Monitor. Refer to figure 8 for power installation.
Connect AC power to TB1-1, L1 and L2. Connect ground wire to one of the three 10-32
grounding screws using a lug (not provided). To meet compliance with UL3010, EN61010 and
CSA1010, install a power switch on the AC load line external to the 6500 Monitor (Note: AC
on/off power switch is not included with the 6500 Monitor package).
CAUTION!
The sensitivity and stability of the monitor will be impaired if the input wiring is not grounded.
Do not apply power to the Monitor until all electrical connections are verified and secure.
Figure 10 6500 Terminal Connections (6500 Cover Removed)
RS485 for
Modbus
RS232 for Modbus and
software upgrades
Single 12-pin connector
for relay outputs
AC Power
connector
8-pin connectors (2)
for 4-20 mA outputs
Relays (4)...
soldered to PCB
L1 L2
Grounding
Screws (10-32)
B- A-
G
N
YSI Incorporated 6500 Environmental Process Monitor 13