Product Core Brief

• Model: IOC4T
• Brand: VIBRO-METER
• Series: VM600 / VM600 Mk2 Machinery Protection System (MPS)
• Core Function: Rear-mounted signal interface card that provides dynamic signal, tachometer, relay, and analog I/O for the MPC4 machinery protection card.
• Product Type: VM600 MPC4 Input/Output Interface Card
• Key Specs: 4 dynamic signal inputs + 2 tachometer inputs | 4 software-controlled relays | 32 programmable open-collector outputs | Buffered analog outputs (0–10 V / 4–20 mA) | Hot-swappable
• Condition: New Surplus

Product Introduction

VIBRO-METER IOC4T is the dedicated input/output interface card for the MPC4 machinery protection card in the VM600 and VM600 Mk2 rack-based systems. It is installed at the rear of the VM600 ABE04x or ABE056 rack, directly behind its paired MPC4 card, and connects to the rack backplane through two connectors. The IOC4T operates in slave mode and communicates with the MPC4 through the backplane interface.

The front panel of the IOC4T, accessible at the rear of the rack, features screw-terminal connectors (48 terminals) for wiring sensor transmission cables, tachometer inputs, and all external control system signals. It provides 4 dynamic signal inputs and 2 speed/phase reference (tachometer) inputs for the MPC4, along with 4 software-controlled relays (RL1–RL4) for alarm and trip signaling. Additionally, it offers 32 fully programmable open-collector outputs that can be jumper-configured for connection to IRC4 and RLC16 relay cards via the rack’s Raw or Open Collector buses.

The IOC4T also buffers raw sensor signals and provides analog output signals (voltage or current) for each processed dynamic channel. All inputs and outputs include EMI protection, and the card supports hot-swap replacement without system shutdown. It is available in “standard” and “isolated circuit” versions. The part numbers 200-560-101-017 and 200-560-000-111 represent specific hardware revisions or circuit variants within the IOC4T family.

 

Key Technical Specifications

Parameter	Value
Product Type	VM600 MPC4 Input/Output Interface Card
Brand	VIBRO-METER
Model
Part Numbers	200-560-101-017, 200-560-000-111
System Compatibility	/ Mk2
Paired Module	MPC4 Machinery Protection Card
Mounting Position	Rear of VM600 ABE04x / ABE056 rack
Dynamic Signal Inputs	4 channels
Tachometer Inputs	2 channels
Relays	4 (software-controlled, RL1–RL4)
Relay Rating	250 VAC, 5 AAC, 1250 VA max
Programmable OC Outputs	32 (jumper-configurable)
Analog Outputs	Buffered 0–10 V / 4–20 mA per channel
Terminal Connector	48-position screw terminals
Protection	EMI filtering on all I/O
Hot Swap	Supported
Operating Temperature	-25 to +65 °C
Storage Temperature	-40 to +85 °C
Humidity (Operating)	0–90% non-condensing
Condition	New Surplus

Note: Exact revision differences, circuit isolation type, and terminal pinout for 200-560-101-017 versus 200-560-000-111 should be verified from the module nameplate and official Vibro-Meter documentation.

 

Quality Control Process

Each IOC4T unit begins with a visual inspection of the front terminal block, PCB, backplane connectors, relay sockets, and jumper settings for corrosion, burnt traces, loose terminals, or mechanical damage. The card is seated into a compatible VM600 rack behind a paired MPC4 to verify mechanical fit and backplane engagement.

Power is applied through the rack supply, and relay operation is verified by energizing each relay (RL1–RL4) and checking contact continuity. Terminal block connections are inspected for proper screw torque and pin integrity. Where testable, analog output levels and open-collector output states are verified against expected values. The card is checked for proper slave-mode communication with the MPC4. Final packing uses anti-static bags, foam inserts, and sealed cartons to protect the terminal block and backplane contacts during shipment.

 

Replacement Pitfall Guide

❗ Confirm the paired MPC4 card. The IOC4T is a slave interface card that must be paired with a specific MPC4. Replacing an IOC4T without verifying the MPC4 configuration can result in mismatched channel mapping or loss of protection logic.

❗ Verify the part number and circuit version. IOC4T cards exist in “standard” and “isolated circuit” variants. Installing the wrong version can cause ground loops, signal interference, or improper relay operation.

❗ Recheck terminal wiring after replacement. The 48-position screw terminals must be rewired exactly as the original. Incorrect wiring of dynamic inputs, tachometer signals, or relay outputs can cause false trips or loss of monitoring.

❗ Validate relay configuration. The 4 relays (RL1–RL4) are software-configurable as normally open or normally closed. After replacement, confirm the relay logic matches the original alarm and trip settings in the MPC4 configuration.

❗ Do not confuse IOC4T with other I/O cards. IOC4T is specific to MPC4. IOC8T pairs with AMC8, and IOC16T pairs with CMC16. They are not interchangeable.

Keep these in mind and you’ll cut 90% of rework time.

Compatibility Matrix & Benchmarks

Original Model	Replacement / Related Model	Compatibility Level	Migration Notes
VIBRO-METER IOC4T 200-560-101-017	VIBRO-METER IOC4T 200-560-101-017	Direct	Same part number; verify circuit version and relay configuration.
VIBRO-METER IOC4T 200-560-101-017	VIBRO-METER IOC4T 200-560-000-111	Needs Adaptation	Same IOC4T family; confirm revision, circuit isolation, and terminal pinout compatibility.
VIBRO-METER IOC4T 200-560-101-017	VIBRO-METER IOC4T 200-560-000-016	Needs Adaptation	Same IOC4T family; verify exact hardware revision and feature set.
VIBRO-METER IOC4T	VIBRO-METER IOC8T / IOC16T	Not Compatible	IOC8T pairs with AMC8; IOC16T pairs with CMC16. Not interchangeable with IOC4T.
VIBRO-METER IOC4T	VIBRO-METER MPC4	Related	MPC4 is the paired protection card; IOC4T is its I/O interface, not a replacement.

Benchmark notes:

• Rear-mounted I/O interface card dedicated to the MPC4 machinery protection module.
• Provides 4 dynamic inputs, 2 tachometer inputs, 4 relays, and 32 programmable open-collector outputs.
• Supports hot-swap replacement and EMI-protected analog outputs for VM600 / VM600 Mk2 racks.

Always confirm the exact revision, circuit isolation type, and paired MPC4 configuration against the original unit before installation.