When a VM600 protection loop loses a CPUM, MPC4, IOC4T, IQS450, or TQ402 module, stock level becomes the first question. The second question is whether the stock is correct for the rack and sensor configuration. This article explains the part number families we hold, what causes stock to move fast, and the checks that prevent a wrong purchase.
VM600 Spare Stock Families: CPUM, MPC4, IOC4T, IQS450, TQ402
At Joyoung International Trading, the following VM600 part groups are continuously restocked because they are the highest-demand replacements in rotating machinery protection systems:
- CPUM: 200-595-067-114, 200-595-063-314 — central processing and rack communication
- MPC4: 200-510-017-017, 200-510-071-113, 200-510-150-031, 200-510-041-022, 200-510-078-115 — machinery protection, trip logic, relay output
- IOC4T: 200-560-000-016, 200-560-000-019, 200-560-000-013, 200-560-000-113, 200-560-000-114 — rack I/O and communication interface
- IQS450: 204-450-000-001, 204-450-000-002 — eddy current signal conditioner
- TQ402: 111-402-000-012, 111-402-000-013 — proximity probe, common suffix H05/H10
TQ412 probes, EA402 extension cables, IPC704 signal conditioners, and CMC16 condition monitoring cards are also handled under the same VM600 family, but the five groups above create the usual emergency order list.
Why CPUM and MPC4 Stock Moves Fast
CPUM and MPC4 are not shelf items that stay for months.
CPUM is the rack processor. A failure takes down communication to the whole VM600 rack. Plants do not wait for repair. They replace first and investigate later.
MPC4 is the protection card. If a trip output fails, the machine may run without protection or trip falsely. Both cases are not acceptable. That is why plants keep a spare MPC4 in the cabinet and why distributors must hold multiple versions.
IOC4T, IQS450, and TQ402 are usually requested together when a monitoring channel goes bad. A typical job asks for:
- one TQ402 probe
- one IQS450 conditioner
- one IOC4T communication card
- one CPUM if the rack also needs re-addressing
This combination means stock levels can change within the same day.
Stock Level Check: Use the Exact Suffix, Not Just the Family Name
The shortest way to get a wrong part is to order “MPC4” without the full code.
Before sending an inquiry, record:
- Full part number from the module label, including 200- or 204- prefix
- Version or suffix, such as 071-113, 150-031, H05, or B21
- Quantity required
- Target date for installation
- Rack type: 204-040-100-011 or 204-040-100-012
Example:
- TQ402 111-402-000-013 with H05 cable is not the same as H10.
- IQS450 204-450-000-001 output configuration differs from 204-450-000-002.
- MPC4 200-510-150-031 is not interchangeable with 200-510-017-017 unless the vibration protection logic and relay outputs are verified.
When you send the full label, stock confirmation can be given in minutes instead of hours.
CPUM MPC4 IOC4T IQS450 TQ402 Stock Level at Joyoung
The table below shows typical stock status for the main VM600 part codes. Exact quantity is confirmed at inquiry time because warehouse allocations change during the day.
| Module | Common Requested Codes | Typical Availability |
|---|---|---|
| CPUM | 200-595-067-114, 200-595-063-314 | Regular stock; batch confirmation same day |
| MPC4 | 200-510-017-017, 200-510-071-113, 200-510-150-031 | Strong stock; relay variant check before dispatch |
| IOC4T | 200-560-000-016, 200-560-000-019, 200-560-000-113/114 | Regular stock; version mix subject to batch |
| IQS450 | 204-450-000-001, 204-450-000-002 | In stock; output and power wiring suffix verified |
| TQ402 | 111-402-000-012, 111-402-000-013 | In stock; cable length H05/H10 assigned by code |
“Regular stock” means the part is routinely sourced and tested. It does not mean unlimited quantities. For project quantities above 10 pieces, lead time is confirmed against the current batch.
How to Confirm Before You Pay
Stock level is only one part of the purchase. The other part is technical match.
Ask these questions:
- Is the CPUM firmware compatible with the existing rack configuration?
- Does the MPC4 relay output version match the existing trip circuit?
- Does the IQS450 power output version match the 24 V wiring and load?
- Does the TQ402 cable length and thread size match the bearing housing?
- Is the module pre-tested and covered by warranty?
A supplier that only gives “yes, in stock” may not be checking the suffix. We check every code against the nameplate before final confirmation.
Common Stock Problems and How to Avoid Them
- Old stock without packaging: works but warranty may be unclear.
- Mixed versions: one shelf location may contain 200-560-000-016 and 200-560-000-019; always send the full number.
- Fake “new” modules: ask for test record, serial number, and warranty period.
- Long lead time disguised as stock: “available” can mean two weeks. Always ask for dispatch date.
FAQ
Do you hold CPUM 200-595-067-114 in stock?
Yes. We keep the CPUM range restocked. Share the exact number and quantity for same-day confirmation.
Can you supply both MPC4 200-510-017-017 and 200-510-150-031?
We can supply standard and relay-output versions. We confirm the trip logic and output relay type before shipping.
What if my exact IOC4T suffix is not available?
We check alternate versions that may be compatible with the rack and communication protocol. If no compatible part is available, we provide an honest lead time.
Do you test IQS450 and TQ402 before shipping?
Yes. Signal conditioners and probes are checked against the order code, output configuration, and cable suffix. We do not ship blind shelf stock.
What is the normal dispatch time?
For standard VM600 modules in stock, dispatch can be same day or next business day. Global courier delivery typically takes 3–7 days depending on the destination.
Contact for VM600 Stock Check
Send the full part number and a nameplate photo to:
Email: [email protected]
Phone/WhatsApp: +86-181-5013-7565
Joyoung International Trading Co., Limited supports plants and maintenance teams with CPUM, MPC4, IOC4T, IQS450, TQ402, and related VM600 spare parts. We confirm exact stock, verify part number suffixes, and ship with the test records needed for urgent replacement.
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