3500/33 16-Channel Relay Module
Datasheet

Bently Nevada Machinery Condition Monitoring162301 Rev. ABDescription
The 3500/33 16-Channel Relay Module is a full-height modulethat provides 16 relay outputs. You can place any number of
16-channel relay modules in any of the slots to the right of theTransient Data Interface (TDI) Module.
Each output of the 3500/33 16-Channel Relay Module can be
independently programmed to perform voting logic.
Each relay of the module includes Alarm Drive Logic.
Programming for the Alarm Drive Logic uses AND and OR logic
and may use the following:lll

Alarming inputs (alert and danger statuses)
Not-OK
Individual Measured Variables from any monitor
channel or any combination of monitor channels in therack

You can program the Alarm Drive using the 3500 Rack
Configuration Software.

3500/33 16-Channel Relay Module
Datasheet

162301 Rev. AB

PhysicalSpecifications

Main Module

InputsPowerConsumption

5.8 watts typical

Outputs

Dimensions(height x widthx depth)

241 mm x 24.4 mm x 242 mm(9.50 in x 0.96 in x 9.52 in)Weight0.7 kg (1.6 lb)

I/O Module

Front Panel LEDs

OK LED

Illuminated when the3500/33 16-Channel Relay
Module is operating
properly.

TX/RX LED

Transmit and receive
flashes when the
3500/3316-Channel Relay
Module is communicatingwith other modules in the3500 rack.

CH Alarm LED

Illuminated when Relay
channel is in an alarm state.

Relay Type

Single-pole
Double-throw (SPDT)

Relay
Environmental
Sealing

Epoxy-sealed

Relay Arc
Suppressor

250 Vrms
Installed as standard

Relay Contact
Life

10,000 cycles

Relay
Operation

Four groups of four channels
are switch selectable forNormally De-energized (ND)or Normally Energized (NE)
operation.

Dimensions(height x widthx depth)

241 mm x 24.4 mm x 99.1 mm(9.50 in x 0.96 in x 3.90 in)

Weight0.4 kg (1.0 lb)

Rack Space Requirements

2/10

Main Module

1 full-height front slot

I/O Modules

1 full-height rear slot

3500/33 16-Channel Relay Module
Datasheet

162301 Rev. AB

Contact Ratings for Failsafe
Systems and Hazardous Area
Systems

Contact Ratings for Standard
Systems
Standard Relays
Min Switched
Current

Standard Relays

100 mA @ 5 Vdc

Min Switched
Current

DC Specifications (Resistive Load)

DC Specifications (Resistive Load)

Max Switched
Current

5AMax SwitchedPower70 W @ 24 Vdc
10 W @ 48 Vdc
9 W @ 60 Vdc

Max Switched
Voltage

125 Vdc

5AMax SwitchedPower1200 VA

Max Switched
Voltage

250 VacMax Switched
Current

5A

Max Switched
Voltage

30 Vdcl

AC Specifications (Resistive Load)
Max Switched
Current

100 mA @ 5 Vdc

lMinimum switched load for standard(silver) contacts is 100 mA @ 5 Vdc.
Minimum switched load for Low Current(gold-plated) contacts is 1 mA @ 1 Vdc.
WARNINGEXPLOSION HAZARDRISK OF BODILY INJURY
Disconnect power prior toservicing. Do notdisconnect while circuit islive unless area is known
to be non-hazardous.
Consult manual prior toservicing.

WARNINGHAZARDOUS VOLTAGE
RISK OF ELECTRIC SHOCKOR BURN
When you connect thefield wiring to the3500/3316-Channel Relay
Module, conductors may
be exposed, creating ashock hazard at highvoltages.

3/10

3500/33 16-Channel Relay Module
Datasheet

162301 Rev. AB

Contact Ratings for Special Low
Current Relay Applications
Low Current Relays
DC Specifications (Resistive Load)
Min Switched
Current

1 mA @ 1 Vdc

Max Switched
Current

100 mA @ 48 Vdc

Specific to AC up to 120VAC:ll

The Minimum switching current for Goldplated is 1m A
The maximum switching current before
damaging the Gold relays is 5m A

For relay contact selection, see Front and Rear
View of the 3500/33 16-Channel Relay Module
on page 8.

4/10

3500/33 16-Channel Relay Module
Datasheet

162301 Rev. AB

Hazardous Area Approvals

Compliance and Certifications
FCC

For the detailed listing of country andproduct-specific approvals, refer tothe Approvals Quick Reference Guide(108M1756).

This device complies with part 15 of theFCC Rules. Operation is subject to thefollowing two conditions:ll

For additional technicaldocumentation, please log in tobntechsupport.com and access the
Bently Nevada Media Library.

This device may not cause harmfulinterference.
This device must accept any
interference received, includinginterference that may cause
undesired operation.

cNRTLus

EMC

Class I, Zone 2: AEx/Ex nA nC ic IIC T4 Gc;
Class I, Zone 2: AEx/Ex ec nC ic IIC T4 Gc;
Class I, Division 2, Groups A, B, C, and D;

European Community Directive:
EMC Directive 2014/30/EU

T4 @ Ta= -20˚C to +65˚C (-4˚F to +149˚F)
When installed per drawing 149243 or149244.

Standards:
EN 61000-6-2; Immunity forIndustrial Environments
EN 61000-6-4; Emissions for
Industrial Environments

ATEX/IECEx
II 3 GElectrical Safety

Ex nA nC ic IIC T4 Gc
Ex ec nC ic IIC T4 Gc

European Community Directive:

T4 @ Ta= -20˚C to +65˚C(-4˚F to +149˚F)
When installed per drawing 149243 or149244.

LV Directive 2014/35/EUStandards:
EN 61010-1

RoHS
European Community Directive:
RoHS Directive 2011/65/EU

Maritime
DNV GL rules for classification – Ships,
offshore units, and high speed and lightcraft
ABS Rules for Condition of Classification,
Part 1ll

Steel Vessels RulesOffshore Units and Structures

5/10

3500/33 16-Channel Relay Module
Datasheet

162301 Rev. AB

Ordering Information
For the detailed listing of country andproduct-specific approvals, refer tothe Approvals Quick Reference Guide(108M1756).
For additional technicaldocumentation, please log in tobntechsupport.com and access theBently Nevada Media Library.

3500/33 AA-BB
A: Output Module01

16-Channel Relay Output Module0216-Channel Failsafe Relay Output
Module03

Low Current 16-Channel Relay Output
Module04

Low Current 16-Channel Failsafe RelayOutput Module

B: Hazardous Area Approval Option00

None01cNRTLus (Class 1, Division 2)

02

ATEX / IECEx / CSA (Class 1, Zone 2)

Spares149986-01

Spare 16-Channel Relay
Control Module

149992-01

Spare 16-Channel Relay
Output Module

149992-02

Spare 16-Channel Failsafe
Relay Output Module

149992-03

Spare 16-Channel Low
Current Relay Output Module

149992-04

Spare 16-Channel Low
Current Failsafe Relay
Output Module

6/1004425545

Grounding Wrist Strap(single use)

162291

16-Channel Relay Module
User Guide

00580453

Connector Header
Internal Termination
16-position
Green166M2381

Connector Header
Push-in-Spring Type(Alternative for PN
00580453)

3500/33 16-Channel Relay Module
Datasheet

162301 Rev. AB

Ordering Considerations
llllllll

The 3500/33 16-Channel Relay Module
requires the 3500 Rack Config, version 3.3or later.
The 3500/33 requires the 3500 Data
Acquisition Software, version 2.40 or later.
The 3500/33 16-Channel Relay Module
requires the 3500 Data Display Software,version 1.40 or later.
When ordered with the multiple
approvals option (-02), the 3500 monitor
is certified to Zone 2 standards, including
ATEX and North American zones.
The Zone 2 standards specify increased
spacing requirements at higher voltages.
The 3500/33 16-Channel Relay Module
does not meet these spacing
requirements. Thus, the module orderedwith the multiple approvals option islimited to a lower voltage than those withthe other approvals options.
Using higher voltages violates thehazardous area certificates associatedwith the multiple approvals option.
The North American Division 2 standards
associated with the CSA-only approvals
option (-01) have been de-rated to 30
Vrms to comply with 61010-1 type test
requirements.
If the 3500/33 16-Channel Relay Module ispart of a functional safety (SIL) system,
the functional safety certificate requires
the restricted voltage. Higher voltages
are not allowed for functional safety (SIL)systems.

7/10

3500/33 16-Channel Relay Module
Datasheet

162301 Rev. AB

Graphs and Figures

1.
2.
3.
4.
5.
6.

Relay Module
I/O Module
Status LEDs
Relay Channel LEDs
Relay Contacts
Relay Mode Selection Switch

Figure 1: Front and Rear View of the 3500/33 16-Channel Relay Module

8/10

3500/33 16-Channel Relay Module
Datasheet

162301 Rev. AB

1. Low Current Output Modules (Ordering options A03 andA04) use gold-plated relay contacts
2. Standard Output Modules (Ordering options A01 and A02)
use silver relay contacts
If the application is at the transition between the low current region and the high current
region, the most appropriate choice is to select the Low Current option (with gold-platedcontacts). If the gold plating is damaged by excessive load, the contacts will still behave as
standard silver contacts.
Figure 2: Relay Contact Selection for DC Loads

9/10

3500/33 16-Channel Relay Module
Datasheet

162301 Rev. AB

Copyright 2024 Baker Hughes Company. All rights reserved.

Bently Nevada and Orbit Logo are registered trademarks of Bently Nevada, a Baker Hughes business, in the UnitedStates and other countries. The Baker Hughes logo is a trademark of Baker Hughes Company. All other product andcompany names are trademarks of their respective holders. Use of the trademarks does not imply any affiliation
with or endorsement by the respective holders.
Baker Hughes provides this information on an “as is” basis for general information purposes. Baker Hughes does notmake any representation as to the accuracy or completeness of the information and makes no warranties of any
kind, specific, implied or oral, to the fullest extent permissible by law, including those of merchantability and fitness
for a particular purpose or use. Baker Hughes hereby disclaims any and all liability for any direct, indirect,
consequential or special damages, claims for lost profits, or third party claims arising from the use of theinformation, whether a claim is asserted in contract, tort, or otherwise. Baker Hughes reserves the right to makechanges in specifications and features shown herein, or discontinue the product described at any time without
notice or obligation. Contact your Baker Hughes representative for the most current information.
The information contained in this document is the property of Baker Hughes and its affiliates; and is subject tochange without prior notice. It is being supplied as a service to our customers and may not be altered or its content
repackaged without the express written consent of Baker Hughes. This product or associated products may becovered by one or more patents. See Bently.com/legal.

1631 Bently Parkway South, Minden, Nevada USA 89423
Phone: 1.775.782.3611 (US) or Bently.com/support
Bently.com

10/10