SPX Cooling Technologies IMI 685B Vibration User manual
- Type
- User manual
IMI 685B vibration switch
INSTALLATION - OPERATION
Z1120322 ISSUED 6/2020 READ AND UNDERSTAND THIS MANUAL PRIOR TO OPERATING OR SERVICING THIS PRODUCT.
user manual
2
overview
The 685B Series electronic vibration switch is designed to monitor vibration levels and trip an alert when a specified
limit is exceeded. A second onboard relay trips an alarm that can be used to shut down a piece of equipment or
act as a secondary alert level. An onboard accelerometer with precision electronics insures reliability and accuracy.
Power Supply
Optional Remote
Accelerometer
685B Vibration Switch
with Internal Accelerometer
BMS Alarming and
Monitoring
Cooling Tower Fan VFD
or Motor Starter
Typical System Schematic
Note: Seal inside of conduit at the vibration switch box creating a vapor barrier against condensing water entering
the vibration switch enclosure
3
calibration settings
Note Vibration switch settings need to be made in the field. Refer to illustrations
below for recommended settings.
Alert
Reset
Test
Power
Alarm
SP
+SENSOR (ICP)
-SENSOR/COMM
RV OUTPUT
+AC
-AC
GND
POWER
ALARM (shutdown)
ALARM (shutdown)
ALERT (notification)
ALERT (notification)
NC/DE
COMM
NO/DE
NC/DE
COMM
NO/DE
CNT DE DE ON
ALM ALT CAL
LAT EN EN OFF
RESET
COMM
CAL
-4-20 mA
+4-20 mA
10% 100% 0 45s 10% 100% 0 45s
GND
TD SP TD
Alarm (shutdown) at
.7 in/sec with
3 sec time delay
DOWN position
(Relay Latch)
DOWN position
(Calibration)
Do Not Change
UP position
(Default Relay Stage)
Alert (notification)
at .6 in/sec with
45 sec time delay
Z1120322 | ISSUED 06/2020
©2020 SPX COOLING TECHNOLOGIES, INC. ALL RIGHTS RESERVED.
In the interest of technological progress, all products are subject to design
and/or material change without notice.
IMI 685B vibration switch
USER MANUAL
SPX COOLING TECHNOLOGIES, INC.
7401 WEST 129 STREET
OVERLAND PARK, KS 66213 USA
913 664 7400 | [email protected]
spxcooling.com
Part Number Description Enclosure Rating Connections Standards Model
2456599 Vibration Switch with internal
accelerometer
NEMA 4X/IP68
painted aluminum Conduit hubs 685B
2456778 Vibration Switch for use with
external accelerometer
NEMA 4X/IP68
painted aluminum Conduit hubs 685B
2600296 Accelerometer NEMA 4X/IP68
stainless steel
30' (9m) cord with watertight
molded connection at
accelerometer and flying
ends at opposite end
603C
2706949 Accelerometer NEMA 4X/IP68
stainless steel
50' (15m) cord with water-
tight molded connection at
accelerometer and flying
ends at opposite end
603C
C US
®
Specifications
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SPX Cooling Technologies IMI 685B Vibration User manual
- Type
- User manual
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